#1-3 Find the derivative of the following Emotions and simplify. 1 5 l. x)=E+7x 2. t'(x)= (1 + x2)(xx'3) 3. x) = 1+xx-N 4. x) = 5x + 41% a. Find x) by using techniques of differentiation b. Find POL) by using the denition of the derivative. 5. Find the equation ofthe line tangent to the curve at x = -1. Sketch the curve and the tangent together. f(x) = 4-):2