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thoradicus
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http://www.xtremepapers.com/papers/CIE/Cambridge%20International%20A%20and%20AS%20Level/Mathematics%20%289709%29/9709_w11_qp_33.pdf
no. 10i
cant do ii and iii without doing i first
tan(x)
d/dx(tan(x))=sec^2x
1+tan^2x=sec^2x
Okay, my terms at first would be u^n+2 +u^n. Then, du/dx = sec^2x, so i get du/1+u^2 = dx.
In the end i got (u^n+2 +u^n)/1+u^2. From then on I am stuck. Or did i do something wrong at first?
Homework Statement
no. 10i
cant do ii and iii without doing i first
Homework Equations
tan(x)
d/dx(tan(x))=sec^2x
1+tan^2x=sec^2x
The Attempt at a Solution
Okay, my terms at first would be u^n+2 +u^n. Then, du/dx = sec^2x, so i get du/1+u^2 = dx.
In the end i got (u^n+2 +u^n)/1+u^2. From then on I am stuck. Or did i do something wrong at first?