Question

\(\LARGE \int_{0}^{\frac{\pi}{4}} \sin^2 (4x) \cos^2 (2x) dx\)

Solve by Wallis Formula

anyone wanna show me a demo? :DDD like..say..uhmm... @Mimi_x3 ? hehe

Answer 1

i just need to manipulate it to the form

\(\LARGE \int_{0}^{\frac{\pi}{2}} \sin^m u \cos^n u du\)

when m,n \(\ge\) 0
u = 0 \(\large u_{2} = \frac{\pi}{2}\)

i knoow the rest :D

Answer 2

:)

Answer 3

spill it if you know :p

Answer 4

here we go

Answer 5

where'd we go?

Answer 6

well ...cant we do this without wallis formula?

Answer 7

hmm i think i can :P but i need to learn the wallis formula...

Answer 8

if its without wallis formula i can try ..nt learned that yet :P

Answer 9

well i just need help manipulating it to that form...just need to see how

Answer 10

i gt it!!

Answer 11

use sin 2x formula