Table of Integrals - Forms Involving `ax + b`

The integrals below involve `ax + b`, including forms where `ax + b` is raised to an exponent or in the denominator of a fraction.

1) `int  1/(ax+b)  dx = 1/a ln(ax+b)`

2) `int  x/(ax+b)  dx = x/a - b/(a^2) ln(ax+b)`

3) `int  x^2/(ax+b)  dx = (ax+b)^2/(2a^3)-(2b(ax+b))/a^3+b^3/a^3 ln(ax+b)`

4) `int  x^3/(ax+b)  dx = (ax+b)^3/(3a^4)-(3b(ax+b)^2)/2a^4+(3b^2(ax+b))/a^4-b^3/a^4 ln(ax+b)`

5) `int  1/(x(ax+b))  dx = 1/b ln(x/(ax+b))`

6) `int  1/(x^2 (ax+b))  dx = -1/(bx)+a/b^2 ln((ax+b)/x)`

7) `int  1/(x^3(ax+b))  dx = (2ax-b)/(2b^2x^2)+a^2/b^3 ln(x/(ax+b))`

8) `int  1/(ax+b)^2  dx = -1/(a(ax+b))`

9) `int x/(ax+b)^2  dx = b/(a^2(ax+b))+1/a^2 ln(ax+b)`

10) `int x^2/(ax+b)^2  dx = (ax+b)/a^3-b^2/(a^3(ax+b))-(2b)/a^3 ln(ax+b)`

11) `int  x^3/(ax+b)^2  dx = (ax+b)^2/(2a^4)-(3b(ax+b))/a^4+b^3/(a^4(ax+b))+(3b^2)/a^4 ln(ax+b)`

12) `int  1/(x(ax+b)^2)  dx = 1/(b(ax+b))+1/b^2 ln(x/(ax+b))`

13) `int 1/(x^2(ax+b)^2)  dx = (-a)/(b^2(ax+b))-1/(b^2x)+(2a)/b^3 ln((ax+b)/x)`

14) `int 1/(x^3(ax+b)^2)  dx = -(ax+b)^2/(2b^4x^2)+(3a(ax+b))/(b^4x)-(a^3x)/(b^4(ax+b))-(3a^2)/b^4 ln((ax+b)/x)`

15) `int  1/(ax+b)^3  dx = (-1)/(2(ax+b)^2)`

16) `int  x/(ax+b)^3  dx = (-1)/(a^2(ax+b))+b/(2a^2(ax+b^2))`

17) `int  x^2/(ax+b)^3 = (2b)/(a^3(ax+b))-b^2/(2a^3(ax+b)^2)+1/a^3 ln(ax+b)`

18) `int  x^3/(ax+b)^3  dx = x/a^3-(3b^2)/(a^4(ax+b))+b^3/(2a^4(ax+b)^2)-(3b)/a^4 ln(ax+b)`

19) `int  1/(x(ax+b)^3)  dx = (a^2x^2)/(2b^3(ax+b)^2)-(2ax)/(b^3(ax+b))-1/b^3ln((ax+b)/x)`

20) `int  1/(x^2(ax+b)^3)  dx = (-a)/(2b^2(ax+b)^2)-(2a)/(b^3(ax+b))-1/(b^3x)+(3a)/b^4 ln((ax+b)/x)`

21) `int 1/(x^3(ax+b)^3)  dx = (a^4x^2)/(2b^5(ax+b)^2)-(4a^3x)/(b^5(ax+b)) - (ax+b)^2/(2b^5x^2)-(6a^2)/b^5 ln((ax+b)/x)`

22) `int  (ax+b)^n  dx = (ax+b)^(n+1)/((n+1)a), if n=-1, see (1)`

23) `int  x(ax+b)^n  dx = (ax+b)^(n+2)/((n+2)a^2)-(b(ax+b)^(n+1))/((n+1)a^2), n != -1, -2.  If n=-1, -2, See (2), (9)`

24) `int x^2(ax+b)^n dx = (ax+b)^(n+3)/((n+3)a^3)-(2b(ax+b)^(n+2))/((n+2)a^3)+(b^2(ax+b)^(n+1))/((n+1)a^3)`

If n=-1, -2, -3, see (3), (10), (17)`

25) `int  x^m(ax+b)^n  dx = (x^(m+1)(ax+b^n))/(m+n+1)+(nb)/(m+n+1)int  x^m(ax+b)^(n-1)  dx`

or: `= (x^m(ax+b)^(n+1))/((m+n+1)a)-(mb)/((m+n+1)a)int  x^(m-1)(ax+b)^n  dx`

or: `=( -x^(m+1)(ax+b)^(n+1))/((n+1)b)+(m+n+2)/((n+1)b)int  x^m(ax+b)^(n+1)  dx`