2. in (e^(rootx))/(rootx) dx
3. use integration by parts and change of variables to find the following indefinite integral:
in x(root(x+7)) dx
4.(a) find [in (e^x)/(1+2e^x) dx] by using a suitable substitution
(b) hence find [in 1/(1+2e^x) dx]
5. find [in (cosx - sinx)/(sinx + cosx) dx] by using a suitable substitution
更新1:
for question 3, can you also show how to intergrate the indefinite integral using ' integration by parts'??
更新2:
thanks
