Please post your solution.Find the derivative of f(x)=1/(2-x) using the definition of derivatives (first principle)
I got f'(x)= (-1)/(2(√(2-x)^3))
Is there supposed to be a negative 1 ?
If there isn't may you please show me where my mistake may be
On the third line there is a missing pair of parentheses. Fix that, and everything that follows.
I got it by taking (2-x)-(2-x+h)=-h in lines 5 and 6Now, you tell us if that negative sign should be there.
I'm sorry, but where should the parentheses go .On the third line there is a missing pair of parentheses. Fix that, and everything that follows.
When you replace x with x+h, there must be parentheses around (x+h). Your are subtracting the entire quantity from 2.I'm sorry, but where should the parentheses go .
Should it be in the first fraction, in the numerator?