(1 point) let f(x, y)=x2ex2 and let r be the triangle bounded by the lines x=2, x=y/3, and y=x in the xy-plane.(a) express ∫rfda as a double integral in two different ways by filling in the values for the integrals below. (for one of these it will be necessary to write the double integral as a sum of two integrals, as indicated; for the other, it can be written as a single integral.)∫rfda=∫ba∫dcf(x, y)dy dxwhere a= , b= , c= , and d= .and ∫rfda=∫ba∫dcf(x, y)d d +∫nm∫qpf(x, y)d dwhere a= , b= , c= , d= , m= , n= , p= , and q= .(b) evaluate one of your integrals to find the value of ∫rfda.∫rfda=