Question

So i don't need answer of this ... I just have a doubt that how we have differentiate x² , like we have taken w.r.t to time here so we shouldn't be able to do anything with x² . plz clear my doubt here ​

Answer 1

I was going to submit you this answer. But it contained an inappropriate word so I had to share it as an attachment. I don't know what was inappropriate un the answer.