Double integral (region)

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When solving double integrals, intervals having ONLY constants shows ____ kind of region?

A.Rectangular

B.General

C.Type I

D.Type II

E.None

Find, by a double integral, the total area enclosed between $y=x$ and $y=x^3$ over $-1\le x\le1$ .

\dfrac12

0

1

\dfrac14

The double integral $\iint_R 1\,dx\,dy$ gives the:

A.Volume under the surface z = 1

B.Perimeter of region R

C.Area of region R

D.Average value of f(x, y) over R

E.None

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