Double integration 2

["Dr. Takashi Kikuchi" <takashi.kikuchi@st-hughs.oxford.ac.uk>]

Dear All

Please pardon me again to ask a beginner's question about double integration
again. Could you please tell me the S codes for following double
integration? These integrations involve a variable, not a numerical value to
evaluate the inner integration.

1)
f(x,y)= 2- 2*x- 2*y/3 over {x, 0,1} and {y, 0, 3-3x}
2)
f(x,y)= 2- 2*x- 2*y/3 over {x, 0,1} and {y, 3-x, 3-3x}

Cheers,
Takashi Kikuchi