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If f(x) attains a local minimum at x=...

If `f(x)` attains a local minimum at `x=c` , then write the values of `f^(prime)(c)` and `f"(c)` .

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Given function,
`f(x)`
Given, `x=c`
`Rightarrow f(x) = f(c)`
derivating the function,
`f^(prime)(c)=0`
To be minima,
`f^(prime)prime(c)` > `0`
...
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