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If cos−1(a)+cos−1(b)+cos−1(c)=3π and f be a function such that f(1)=2 and f(x+y)=f(x)⋅f(y) for all x,y∈R, then the value of a2f(1)+b2f(2)+c2f(3)+a+b+ca2f(1)+b2f(2)+c2f(3) is |
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Answer» If cos−1(a)+cos−1(b)+cos−1(c)=3π and f be a function such that f(1)=2 and f(x+y)=f(x)⋅f(y) for all x,y∈R, then the value of a2f(1)+b2f(2)+c2f(3)+a+b+ca2f(1)+b2f(2)+c2f(3) is |
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