Question

f(x)=x-4/x
what are the critical values of f'(x)?

Answer 1

just differentiate the above equation and find out the points then by double integration check out maxima and minima ..you'll get interval of rise and fall

Answer 2

when i differentiate i get x squared+4 divided by x squared. hence no critical values. what am i doing wrong?

Answer 3

well use d(u/v)/dx and i guess you'll get 4/x^2

Answer 4

how do i ask another open question? do i need to close m, 1st ques 1st? new at this thing

Answer 5

you need to close your question first