Using the denition of the derivative. nd f'(x). Then nd f'(1). f'(2), and f'(3) when the derivative exists. i(x)= -x2+6x2 -c:) M) = E] (Type an expression using it as the variable.) Select the correct answer below and. if necessary, ll in the answer box to complete your choice. 0 A. f'(1)=l:i (Type an integer or a simplied fraction.) 0 B. The derivative does not exist. . Select the correct answer below and. if necessary. ll in the answer box to complete your choice. 0 A. r'(2)=]:[ (Type an integer or a simplied fraction.) 0 B. The derivative does not exist. Select the correct anSWer below and. if necessary, ll in the answer box to complete your choice. 0 A- :13): E] (Type an integer or a simplied fraction.) 0 B. The derivative does not exist