(a) Let R be the triangular region enclosed by the x-axis and the lines x=1 and y=2x. (i) Sketch the region R. Further, fill in the following limits of integration: (ii) ∬ R
​
f(x,y)dA=∫ □
□
​
∫ □
□
​
f(x,y)dxdy. (iii) ∬ R
​
f(x,y)dA=∫ □
□
​
∫ □
□
​
f(x,y)dydx. (b) Let R be the elliptical region 9
x 2
​
+ 25
y 2
​
≤1 in the xy-plane. Upon performing the transformation u=x/3 and v=y/5 : (i) Sketch the image in the uv-plane of the region R under the transformation described above. (ii) Compute the appropriate Jacobian and fill in the missing integrand and limits of integration for the the double integral on the right hand side of the following equation: ∬ R
​
e x 2
cosy
dxdy=∫ □
□
​
∫ □
□
​
⋯dudv. Do not evaluate the integral.