How do you use the definition to find the derivative of 3x^2-5x+23x2−5x+2? Calculus Derivatives Limit Definition of Derivative 1 Answer Trevor Ryan. Oct 15, 2015 6x-56x−5 Explanation: Let f(x)=3x^2-5x+2f(x)=3x2−5x+2 Then f'(x)= lim_(h->0)(f(x+h)-f(x))/h =lim_(h->0)((3(x+h)^2-5(x+h)+2)-(3x^2-5x+2))/h =lim_(h->0)(3x^2+6xh+3h^2-5x-5h+2-3x^2+5x-2)/h =lim_(h->0)(h(6x+3h-5))/h =6x-5 Answer link Related questions What is the limit definition of the derivative of the function y=f(x) ? Ho do I use the limit definition of derivative to find f'(x) for f(x)=3x^2+x ? How do I use the limit definition of derivative to find f'(x) for f(x)=sqrt(x+3) ? How do I use the limit definition of derivative to find f'(x) for f(x)=1/(1-x) ? How do I use the limit definition of derivative to find f'(x) for f(x)=x^3-2 ? How do I use the limit definition of derivative to find f'(x) for f(x)=1/sqrt(x) ? How do I use the limit definition of derivative to find f'(x) for f(x)=5x-9x^2 ? How do I use the limit definition of derivative to find f'(x) for f(x)=sqrt(2+6x) ? How do I use the limit definition of derivative to find f'(x) for f(x)=mx+b ? How do I use the limit definition of derivative to find f'(x) for f(x)=c ? See all questions in Limit Definition of Derivative Impact of this question 2175 views around the world You can reuse this answer Creative Commons License