# C4 IntegrationWatch

#1
Can someone please explain to me how to do this integration question? Its from Edexcel C4 June 2005:

Use the substitution x = sin x to find the exact value of the integral of 1/(1-x^2)^3/2 between the limits of 1/2 and 0.

Thanks
0
8 years ago
#2
if you let x = sin u then dx = du cosu and then you use the relationship to simplify the bracket...

you also need to remember how to integrate

good luck

the bear

0
8 years ago
#3
EDIT: guy above's way is quicker
0
#4
(Original post by the bear)
if you let x = sin u then dx = du cosu and then you use the relationship to simplify the bracket...

you also need to remember how to integrate

good luck

the bear

right, i think i get it now, cheers
0
8 years ago
#5
(Original post by Markh1000)
EDIT: guy above's way is quicker
hey Markh1000 your way is cool too !! Double angles rock !!

the bear

0
8 years ago
#6
(Original post by the bear)
hey Markh1000 your way is cool too !! Double angles rock !!

the bear

Haha thanks
0
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