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## Main Question or Discussion Point

Hi, im studying for my integral exam in 2 weeks,andim trying really hard to understand a few calc questions which i really cant get how to solve,

e.g

(ALL these questions are integrations questions)

1)ln^n(x)

i tried to put 1.ln^n (X) but i cant seem to get the answer right

^^^^ this is a derivation

2) same with tan^n (x)

i dont know how to integrate sec^(any even or odd power) x

x/(a+bx )1/2. how is this equal to 2/3b^2(bx-2a)(a+bx)^1/2

how do i derive tan^n(x)

Sinx/sin(x+alpha)

PLEASE help

e.g

(ALL these questions are integrations questions)

1)ln^n(x)

i tried to put 1.ln^n (X) but i cant seem to get the answer right

^^^^ this is a derivation

2) same with tan^n (x)

i dont know how to integrate sec^(any even or odd power) x

x/(a+bx )1/2. how is this equal to 2/3b^2(bx-2a)(a+bx)^1/2

how do i derive tan^n(x)

Sinx/sin(x+alpha)

PLEASE help