Question
Assertion $(\mathbf{A}):$ Let $f(x)=5-4(x-2)^{21}$, then at $x=2$ the function $f(x)$ attains neither the least value nor the greatest value. Reason $(\mathbf{R}):$ At $x=2$, the first derivative does not exist.
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The function is $f(x)=5-4(x-2)^{21}$. Show more…
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