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###### Maths help

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2 months ago

Can anyone tell me where I’ve gone wrong with this question?

q1

my maths work

q1

my maths work

(edited 2 months ago)

Reply 1

2 months ago

Original post by pkkkkkk

As far as I can see, your working looks OK as far as (1/4)INT(1 / (cos^2u)), except that you have failed to express the limits of integration in terms of u. (You have also used theta rather than u but that is a minor point). You should then note that 1 / (cos^2u) = sec^2u, which is a standard integral.

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