Hi please help me to solve this question....if y=cos ax/1+sin ax,where a is positive integer,show that cos ax d^2y/dx^2=a^2 y^2

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- Sep 17th 2012, 09:45 AMsharmalaPlease help to solve for me.....
Hi please help me to solve this question....if y=cos ax/1+sin ax,where a is positive integer,show that cos ax d^2y/dx^2=a^2 y^2

- Sep 17th 2012, 09:53 AMProve ItRe: Please help to solve for me.....
This is unreadable. Please use brackets where they're needed, or else learn some basic LaTeX.

- Sep 17th 2012, 10:50 AMMarkFLRe: Please help to solve for me.....
You are given:

You are asked to show:

Tools you will need:

Quotient rule:

Derivative of sine with chain rule:

Derivative of cosine with chain rule:

Can you show your attempt (using bracketing symbols or )? - Sep 22nd 2012, 04:01 AMMarkFLRe: Please help to solve for me.....
As an alternative, you could write:

Hence: