f(c+ h) - f(e) h In Problems 1-4, use the definition f'(c)= lim to find the indicated derivative. 1. f'(1) if f(x) = x 2. f'(2) if f(r) (21) 3. f'(3) iff(r) -1 4. f'(4) if f(s) In Problems 5-22, use f'(x) = lim [f(x + h) - f(x)\/h to find the derivative at x. 5. (x)=2x+1 7. r(x)=3x+4 9. f(x)= ax + bx + c 11. f(x)=x+2x + 1 2 13. h(x)= 6. f(x) = ax + B 8. f(x)=x+x+1 10. f(x) = x* 12. g(x)=x+x 14. 5(x)= *+1