F(x,y)={k(1-x^2) find the value of k
Since f(x) is a p.d.f. "\\int_{\\infty}^{\\infty} f(x)dx=1"
"\\implies \\int_0^1 k(1-x^2)dx=1"
"\\implies k(x-\\dfrac{x^3}{3})_0^1=1"
"\\implies k(1-\\dfrac{1}{3})=1"
"\\implies k=\\dfrac{3}{2}"
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