integration formula

Formulas on Exponential integration1) `int e^(x)dx` = `e^x`2) `int e^(cx)dx` = `(e^(cx))/(c)` 3) `int a^(cx)dx` =`(a^(cx))/(c.ln a)` [ a > 0, a ≠1 ]4) `int_0^oo e^(-ax) sin bx dx` = `b/(a^2 + b^2)` [ a > 0 ] 5) `int_0^oo e^(-ax) cos bx dx` = `a/(a^2 + b^2)` [ a > 0 ]