(b) Let f: [a, b] → R be a continuous function which satisfy f(a) < 0 and f(b) > 0. Let W C[a, b] defined by W:= {r € (a,6) : f(2) < o}. (4) < o}. and let w := sup W. Prove that f(w) = 0. %3D

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A: Introduction: The by parts method is a method to determine integration. When the integrand is given…

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A: Given: Let fx,y=x2+xy+3y2-3. To Show: fx,y contain minimum and maximum value.

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