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[" If "f(x)" and "g(x)" are differentiab...

[" If "f(x)" and "g(x)" are differentiable functions for "0<=x<=1],[" such that "f(0)=10,g(0)=2,f(1)=2,g(1)=4," then in "],[" the interval "(0,1),],[" a."f'(x)=0" for all "x],[" b."f(x)+4g'(x)=0" for at least one "x],[" c."f'(x)=2g'(x)" for at most one "x],[" ,none of these "]

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