eigenmath/itab.cpp

305 lines
10 KiB
C++

/* Table of integrals
The symbol f is just a dummy symbol for creating a list f(A,B,C,C,...) where
A is the template expression
B is the result expression
C is an optional list of conditional expressions
*/
#include "stdafx.h"
#include "defs.h"
char *itab[] = {
// 1
"f(a,a*x)",
// 9 (need a caveat for 7 so we can put 9 after 7)
"f(1/x,log(x))",
// 7
"f(x^a,x^(a+1)/(a+1))",
// 12
"f(exp(a*x),1/a*exp(a*x))",
"f(exp(a*x+b),1/a*exp(a*x+b))",
"f(x*exp(a*x^2),exp(a*x^2)/(2*a))",
"f(x*exp(a*x^2+b),exp(a*x^2+b)/(2*a))",
// 14
"f(log(a*x),x*log(a*x)-x)",
// 15
"f(a^x,a^x/log(a),or(not(number(a)),a>0))",
// 16
"f(1/(a+x^2),1/sqrt(a)*arctan(x/sqrt(a)),or(not(number(a)),a>0))",
// 17
"f(1/(a-x^2),1/sqrt(a)*arctanh(x/sqrt(a)))",
// 19
"f(1/sqrt(a-x^2),arcsin(x/(sqrt(a))))",
// 20
"f(1/sqrt(a+x^2),log(x+sqrt(a+x^2)))",
// 27
"f(1/(a+b*x),1/b*log(a+b*x))",
// 28
"f(1/(a+b*x)^2,-1/(b*(a+b*x)))",
// 29
"f(1/(a+b*x)^3,-1/(2*b)*1/(a+b*x)^2)",
// 30
"f(x/(a+b*x),x/b-a*log(a+b*x)/b/b)",
// 31
"f(x/(a+b*x)^2,1/b^2*(log(a+b*x)+a/(a+b*x)))",
// 33
"f(x^2/(a+b*x),1/b^2*(1/2*(a+b*x)^2-2*a*(a+b*x)+a^2*log(a+b*x)))",
// 34
"f(x^2/(a+b*x)^2,1/b^3*(a+b*x-2*a*log(a+b*x)-a^2/(a+b*x)))",
// 35
"f(x^2/(a+b*x)^3,1/b^3*(log(a+b*x)+2*a/(a+b*x)-1/2*a^2/(a+b*x)^2))",
// 37
"f(1/x*1/(a+b*x),-1/a*log((a+b*x)/x))",
// 38
"f(1/x*1/(a+b*x)^2,1/a*1/(a+b*x)-1/a^2*log((a+b*x)/x))",
// 39
"f(1/x*1/(a+b*x)^3,1/a^3*(1/2*((2*a+b*x)/(a+b*x))^2+log(x/(a+b*x))))",
// 40
"f(1/x^2*1/(a+b*x),-1/(a*x)+b/a^2*log((a+b*x)/x))",
// 41
"f(1/x^3*1/(a+b*x),(2*b*x-a)/(2*a^2*x^2)+b^2/a^3*log(x/(a+b*x)))",
// 42
"f(1/x^2*1/(a+b*x)^2,-(a+2*b*x)/(a^2*x*(a+b*x))+2*b/a^3*log((a+b*x)/x))",
// 60
"f(1/(a+b*x^2),1/sqrt(a*b)*arctan(x*sqrt(a*b)/a),or(not(number(a*b)),a*b>0))",
// 61
"f(1/(a+b*x^2),1/(2*sqrt(-a*b))*log((a+x*sqrt(-a*b))/(a-x*sqrt(-a*b))),or(not(number(a*b)),a*b<0))",
// 62 is the same as 60
// 63
"f(x/(a+b*x^2),1/2*1/b*log(a+b*x^2))",
//64
"f(x^2/(a+b*x^2),x/b-a/b*integral(1/(a+b*x^2),x))",
//65
"f(1/(a+b*x^2)^2,x/(2*a*(a+b*x^2))+1/2*1/a*integral(1/(a+b*x^2),x))",
//66 is covered by 61
//70
"f(1/x*1/(a+b*x^2),1/2*1/a*log(x^2/(a+b*x^2)))",
//71
"f(1/x^2*1/(a+b*x^2),-1/(a*x)-b/a*integral(1/(a+b*x^2),x))",
//74
"f(1/(a+b*x^3),1/3*1/a*(a/b)^(1/3)*(1/2*log(((a/b)^(1/3)+x)^3/(a+b*x^3))+sqrt(3)*arctan((2*x-(a/b)^(1/3))*(a/b)^(-1/3)/sqrt(3))))",
//76
"f(x^2/(a+b*x^3),1/3*1/b*log(a+b*x^3))",
//77
"f(1/(a+b*x^4),1/2*1/a*(a/b/4)^(1/4)*(1/2*log((x^2+2*(a/b/4)^(1/4)*x+2*(a/b/4)^(1/2))/(x^2-2*(a/b/4)^(1/4)*x+2*(a/b/4)^(1/2)))+arctan(2*(a/b/4)^(1/4)*x/(2*(a/b/4)^(1/2)-x^2))),or(not(number(a*b)),a*b>0))",
//78
"f(1/(a+b*x^4),1/2*(-a/b)^(1/4)/a*(1/2*log((x+(-a/b)^(1/4))/(x-(-a/b)^(1/4)))+arctan(x*(-a/b)^(-1/4))),or(not(number(a*b)),a*b<0))",
//79
"f(x/(a+b*x^4),1/2*sqrt(b/a)/b*arctan(x^2*sqrt(b/a)),or(not(number(a*b)),a*b>0))",
//80
"f(x/(a+b*x^4),1/4*sqrt(-b/a)/b*log((x^2-sqrt(-a/b))/(x^2+sqrt(-a/b))),or(not(number(a*b)),a*b<0))",
//81
"f(x^2/(a+b*x^4),1/4*1/b*(a/b/4)^(-1/4)*(1/2*log((x^2-2*(a/b/4)^(1/4)*x+2*sqrt(a/b/4))/(x^2+2*(a/b/4)^(1/4)*x+2*sqrt(a/b/4)))+arctan(2*(a/b/4)^(1/4)*x/(2*sqrt(a/b/4)-x^2))),or(not(number(a*b)),a*b>0))",
//82
"f(x^2/(a+b*x^4),1/4*1/b*(-a/b)^(-1/4)*(log((x-(-a/b)^(1/4))/(x+(-a/b)^(1/4)))+2*arctan(x*(-a/b)^(-1/4))),or(not(number(a*b)),a*b<0))",
//83
"f(x^3/(a+b*x^4),1/4*1/b*log(a+b*x^4))",
//124
"f(sqrt(a+b*x),2/3*1/b*sqrt((a+b*x)^3))",
//125
"f(x*sqrt(a+b*x),-2*(2*a-3*b*x)*sqrt((a+b*x)^3)/15/b^2)",
//126
"f(x^2*sqrt(a+b*x),2*(8*a^2-12*a*b*x+15*b^2*x^2)*sqrt((a+b*x)^3)/105/b^3)",
//128
"f(sqrt(a+b*x)/x,2*sqrt(a+b*x)+a*integral(1/x*1/sqrt(a+b*x),x))",
//129
"f(sqrt(a+b*x)/x^2,-sqrt(a+b*x)/x+b/2*integral(1/x*1/sqrt(a+b*x),x))",
//131
"f(1/sqrt(a+b*x),2*sqrt(a+b*x)/b)",
//132
"f(x/sqrt(a+b*x),-2/3*(2*a-b*x)*sqrt(a+b*x)/b^2)",
//133
"f(x^2/sqrt(a+b*x),2/15*(8*a^2-4*a*b*x+3*b^2*x^2)*sqrt(a+b*x)/b^3)",
//135
"f(1/x*1/sqrt(a+b*x),1/sqrt(a)*log((sqrt(a+b*x)-sqrt(a))/(sqrt(a+b*x)+sqrt(a))),or(not(number(a)),a>0))",
//136
"f(1/x*1/sqrt(a+b*x),2/sqrt(-a)*arctan(sqrt(-(a+b*x)/a)),or(not(number(a)),a<0))",
//137
"f(1/x^2*1/sqrt(a+b*x),-sqrt(a+b*x)/a/x-1/2*b/a*integral(1/x*1/sqrt(a+b*x),x))",
//156
"f(sqrt(x^2+a),1/2*(x*sqrt(x^2+a)+a*log(x+sqrt(x^2+a))))",
//157
"f(1/sqrt(x^2+a),log(x+sqrt(x^2+a)))",
//158
"f(1/x*1/sqrt(x^2+a),arcsec(x/sqrt(-a))/sqrt(-a),or(not(number(a)),a<0))",
//159
"f(1/x*1/sqrt(x^2+a),-1/sqrt(a)*log((sqrt(a)+sqrt(x^2+a))/x),or(not(number(a)),a>0))",
//160
"f(sqrt(x^2+a)/x,sqrt(x^2+a)-sqrt(a)*log((sqrt(a)+sqrt(x^2+a))/x),or(not(number(a)),a>0))",
//161
"f(sqrt(x^2+a)/x,sqrt(x^2+a)-sqrt(-a)*arcsec(x/sqrt(-a)),or(not(number(a)),a<0))",
//162
"f(x/sqrt(x^2+a),sqrt(x^2+a))",
//163
"f(x*sqrt(x^2+a),1/3*sqrt((x^2+a)^3))",
//164 need an unexpanded version?
"f(sqrt(a+x^6+3*a^(1/3)*x^4+3*a^(2/3)*x^2),1/4*(x*sqrt((x^2+a^(1/3))^3)+3/2*a^(1/3)*x*sqrt(x^2+a^(1/3))+3/2*a^(2/3)*log(x+sqrt(x^2+a^(1/3)))))",
// match doesn't work for the following
"f(sqrt(-a+x^6-3*a^(1/3)*x^4+3*a^(2/3)*x^2),1/4*(x*sqrt((x^2-a^(1/3))^3)-3/2*a^(1/3)*x*sqrt(x^2-a^(1/3))+3/2*a^(2/3)*log(x+sqrt(x^2-a^(1/3)))))",
//165
"f(1/sqrt(a+x^6+3*a^(1/3)*x^4+3*a^(2/3)*x^2),x/a^(1/3)/sqrt(x^2+a^(1/3)))",
//166
"f(x/sqrt(a+x^6+3*a^(1/3)*x^4+3*a^(2/3)*x^2),-1/sqrt(x^2+a^(1/3)))",
//167
"f(x*sqrt(a+x^6+3*a^(1/3)*x^4+3*a^(2/3)*x^2),1/5*sqrt((x^2+a^(1/3))^5))",
//168
"f(x^2*sqrt(x^2+a),1/4*x*sqrt((x^2+a)^3)-1/8*a*x*sqrt(x^2+a)-1/8*a^2*log(x+sqrt(x^2+a)))",
//169
"f(x^3*sqrt(x^2+a),(1/5*x^2-2/15*a)*sqrt((x^2+a)^3))",
//170 like 169?
//171
"f(x^2/sqrt(x^2+a),1/2*x*sqrt(x^2+a)-1/2*a*log(x+sqrt(x^2+a)))",
//172
"f(x^3/sqrt(x^2+a),1/3*sqrt((x^2+a)^3)-a*sqrt(x^2+a))",
//173
"f(1/x^2*1/sqrt(x^2+a),-sqrt(x^2+a)/a/x)",
//174
"f(1/x^3*1/sqrt(x^2+a),-1/2*sqrt(x^2+a)/a/x^2+1/2*log((sqrt(a)+sqrt(x^2+a))/x)/a^(3/2),or(not(number(a)),a>0))",
//175
"f(1/x^3*1/sqrt(x^2-a),1/2*sqrt(x^2-a)/a/x^2+1/2*1/(a^(3/2))*arcsec(x/(a^(1/2))),or(not(number(a)),a>0))",
//176+
"f(x^2*sqrt(a+x^6+3*a^(1/3)*x^4+3*a^(2/3)*x^2),1/6*x*sqrt((x^2+a^(1/3))^5)-1/24*a^(1/3)*x*sqrt((x^2+a^(1/3))^3)-1/16*a^(2/3)*x*sqrt(x^2+a^(1/3))-1/16*a*log(x+sqrt(x^2+a^(1/3))),or(not(number(a)),a>0))",
//176-
"f(x^2*sqrt(-a-3*a^(1/3)*x^4+3*a^(2/3)*x^2+x^6),1/6*x*sqrt((x^2-a^(1/3))^5)+1/24*a^(1/3)*x*sqrt((x^2-a^(1/3))^3)-1/16*a^(2/3)*x*sqrt(x^2-a^(1/3))+1/16*a*log(x+sqrt(x^2-a^(1/3))),or(not(number(a)),a>0))",
//177+
"f(x^3*sqrt(a+x^6+3*a^(1/3)*x^4+3*a^(2/3)*x^2),1/7*sqrt((x^2+a^(1/3))^7)-1/5*a^(1/3)*sqrt((x^2+a^(1/3))^5),or(not(number(a)),a>0))",
//177-
"f(x^3*sqrt(-a-3*a^(1/3)*x^4+3*a^(2/3)*x^2+x^6),1/7*sqrt((x^2-a^(1/3))^7)+1/5*a^(1/3)*sqrt((x^2-a^(1/3))^5),or(not(number(a)),a>0))",
//200+
"f(sqrt(a-x^2),1/2*(x*sqrt(a-x^2)+a*arcsin(x/sqrt(abs(a)))))",
//201 (seems to be handled somewhere else)
//202
"f(1/x*1/sqrt(a-x^2),-1/sqrt(a)*log((sqrt(a)+sqrt(a-x^2))/x),or(not(number(a)),a>0))",
//203
"f(sqrt(a-x^2)/x,sqrt(a-x^2)-sqrt(a)*log((sqrt(a)+sqrt(a-x^2))/x),or(not(number(a)),a>0))",
//204
"f(x/sqrt(a-x^2),-sqrt(a-x^2))",
//205
"f(x*sqrt(a-x^2),-1/3*sqrt((a-x^2)^3))",
//210
"f(x^2*sqrt(a-x^2),-x/4*sqrt((a-x^2)^3)+1/8*a*(x*sqrt(a-x^2)+a*arcsin(x/sqrt(a))),or(not(number(a)),a>0))",
//211
"f(x^3*sqrt(a-x^2),(-1/5*x^2-2/15*a)*sqrt((a-x^2)^3),or(not(number(a)),a>0))",
//214
"f(x^2/sqrt(a-x^2),-x/2*sqrt(a-x^2)+a/2*arcsin(x/sqrt(a)),or(not(number(a)),a>0))",
//215
"f(1/x^2*1/sqrt(a-x^2),-sqrt(a-x^2)/a/x,or(not(number(a)),a>0))",
//216
"f(sqrt(a-x^2)/x^2,-sqrt(a-x^2)/x-arcsin(x/sqrt(a)),or(not(number(a)),a>0))",
//217
"f(sqrt(a-x^2)/x^3,-1/2*sqrt(a-x^2)/x^2+1/2*log((sqrt(a)+sqrt(a-x^2))/x)/sqrt(a),or(not(number(a)),a>0))",
//218
"f(sqrt(a-x^2)/x^4,-1/3*sqrt((a-x^2)^3)/a/x^3,or(not(number(a)),a>0))",
// 290
"f(sin(a*x),-cos(a*x)/a)",
// 291
"f(cos(a*x),sin(a*x)/a)",
// 292
"f(tan(a*x),-log(cos(a*x))/a)",
// 293
"f(1/tan(a*x),log(sin(a*x))/a)",
// 294
"f(1/cos(a*x),log(tan(pi/4+a*x/2))/a)",
// 295
"f(1/sin(a*x),log(tan(a*x/2))/a)",
// 296
"f(sin(a*x)^2,x/2-sin(2*a*x)/(4*a))",
// 297
"f(sin(a*x)^3,-cos(a*x)*(sin(a*x)^2+2)/(3*a))",
// 298
"f(sin(a*x)^4,3/8*x-sin(2*a*x)/(4*a)+sin(4*a*x)/(32*a))",
// 302
"f(cos(a*x)^2,x/2+sin(2*a*x)/(4*a))",
// 303
"f(cos(a*x)^3,sin(a*x)*(cos(a*x)^2+2)/(3*a))",
// 304
"f(cos(a*x)^4,3/8*x+sin(2*a*x)/(4*a)+sin(4*a*x)/(32*a))",
// 308
"f(1/sin(a*x)^2,-1/(a*tan(a*x)))",
// 312
"f(1/cos(a*x)^2,tan(a*x)/a)",
// 318
"f(sin(a*x)*cos(a*x),sin(a*x)^2/(2*a))",
// 320
"f(sin(a*x)^2*cos(a*x)^2,-sin(4*a*x)/(32*a)+x/8)",
// 326
"f(sin(a*x)/cos(a*x)^2,1/(a*cos(a*x)))",
// 327
"f(sin(a*x)^2/cos(a*x),(log(tan(pi/4+a*x/2))-sin(a*x))/a)",
// 328
"f(cos(a*x)/sin(a*x)^2,-1/(a*sin(a*x)))",
// 329
"f(1/(sin(a*x)*cos(a*x)),log(tan(a*x))/a)",
// 330
"f(1/(sin(a*x)*cos(a*x)^2),(1/cos(a*x)+log(tan(a*x/2)))/a)",
// 331
"f(1/(sin(a*x)^2*cos(a*x)),(log(tan(pi/4+a*x/2))-1/sin(a*x))/a)",
// 333
"f(1/(sin(a*x)^2*cos(a*x)^2),-2/(a*tan(2*a*x)))",
// 335
"f(sin(a+b*x),-cos(a+b*x)/b)",
// 336
"f(cos(a+b*x),sin(a+b*x)/b)",
// 337+ (with the addition of b)
"f(1/(b+b*sin(a*x)),-tan(pi/4-a*x/2)/a/b)",
// 337- (with the addition of b)
"f(1/(b-b*sin(a*x)),tan(pi/4+a*x/2)/a/b)",
// 338 (with the addition of b)
"f(1/(b+b*cos(a*x)),tan(a*x/2)/a/b)",
// 339 (with the addition of b)
"f(1/(b-b*cos(a*x)),-1/tan(a*x/2)/a/b)",
// 340
"f(1/(a+b*sin(x)),1/sqrt(b^2-a^2)*log((a*tan(x/2)+b-sqrt(b^2-a^2))/(a*tan(x/2)+b+sqrt(b^2-a^2))),b^2-a^2)", // check that b^2-a^2 is not zero
// 341
"f(1/(a+b*cos(x)),1/sqrt(b^2-a^2)*log((sqrt(b^2-a^2)*tan(x/2)+a+b)/(sqrt(b^2-a^2)*tan(x/2)-a-b)),b^2-a^2)", // check that b^2-a^2 is not zero
// 441
"f(arcsin(a*x),x*arcsin(a*x)+sqrt(1-a^2*x^2)/a)",
// 442
"f(arccos(a*x),x*arccos(a*x)+sqrt(1-a^2*x^2)/a)",
// 443
"f(arctan(a*x),x*arctan(a*x)-1/2*log(1+a^2*x^2)/a)",
// 485 (with addition of a)
"f(log(a*x),x*log(a*x)-x)",
// 486 (with addition of a)
"f(x*log(a*x),x^2*log(a*x)/2-x^2/4)",
// 487 (with addition of a)
"f(x^2*log(a*x),x^3*log(a*x)/3-1/9*x^3)",
// 489
"f(log(x)^2,x*log(x)^2-2*x*log(x)+2*x)",
// 493 (with addition of a)
"f(1/x*1/(a+log(x)),log(a+log(x)))",
// 499
"f(log(a*x+b),(a*x+b)*log(a*x+b)/a-x)",
// 500
"f(log(a*x+b)/x^2,a/b*log(x)-(a*x+b)*log(a*x+b)/b/x)",
// 554
"f(sinh(x),cosh(x))",
// 555
"f(cosh(x),sinh(x))",
// 556
"f(tanh(x),log(cosh(x)))",
// 560
"f(x*sinh(x),x*cosh(x)-sinh(x))",
// 562
"f(x*cosh(x),x*sinh(x)-cosh(x))",
// 566
"f(sinh(x)^2,sinh(2*x)/4-x/2)",
// 569
"f(tanh(x)^2,x-tanh(x))",
// 572
"f(cosh(x)^2,sinh(2*x)/4+x/2)",
// ?
"f(x^3*exp(a*x^2),exp(a*x^2)*(x^2/a-1/(a^2))/2)",
// ?
"f(x^3*exp(a*x^2+b),exp(a*x^2)*exp(b)*(x^2/a-1/(a^2))/2)",
// ?
"f(exp(a*x^2),-i*sqrt(pi)*erf(i*sqrt(a)*x)/sqrt(a)/2)",
// ?
"f(erf(a*x),x*erf(a*x)+exp(-a^2*x^2)/a/sqrt(pi))",
NULL,
};