Write the Word or Phrase That Best Completes Each Statement $\mathrm { f }$

Essay

Write the word or phrase that best completes each statement or answers the question.
Solve the problem.
-Given the function $\mathrm { f }$ defined over the interval [a, b], graph the function indicating the area A under $\mathrm { f }$ from a to $b$ . express the area $\mathrm { A }$ as an integral.
$$f ( x ) = x ^ { 2 } + 3 , \quad [ - 4,2 ]$$