Which of the following integral represents the volume V under the plane z = 8x + 6y over the region R = {(x, y): 0 ≤ x ≤ 1, 0 ≤ y ≤ 2x2}
1
\(\mathop \smallint \nolimits_0^1 \mathop \smallint \nolimits_0^{2{x^2}} \left( {8x + 6y} \right)dy\;dx\)
2
\(\mathop \smallint \nolimits_0^2 \mathop \smallint \nolimits_{\sqrt {\frac{y}{2}} }^1 \left( {8x + 6y} \right)dx\;dy\)
3
\(\mathop \smallint \nolimits_0^2 \mathop \smallint \nolimits_0^{2{x^2}} \left( {8x + 6y} \right)dy\;dx\)
4
\(\mathop \smallint \nolimits_0^1 \mathop \smallint \nolimits_{\sqrt {\frac{y}{2}} }^1 \left( {8x + 6y} \right)dx\;dy\)