Can somebody please tell me if my answers are correct for differentiation. Please see the attached image files.

Question

anonymous · Answer

Here are the questions with solutions, please see if the answers are correct.

anonymous · Answer

sorry 1d and 2d image files are the same. I have to add one more image file here which is question 1 ..

ash2326 · Answer

@azib seems right

anonymous · Answer

Are you sure, all these answers are correct?

ash2326 · Answer

@azib in question no. 3, step 6 has a mistake.

anonymous · Answer

@ash2326 Can you please point out the mistake.

ash2326 · Answer

$$\frac{x^2}{x^3-7}-\frac{10x}{1-x^2}$$
You forgot the - sign
$$\frac{x^2(1-x^2)-10x(x^3-7)}{(x^3-7)(1-x^2)}$$

anonymous · Answer

and apart from that mistake, everything is right?

ash2326 · Answer

Yeah

anonymous · Answer

thanks :)