MCQ
Function $f(x)={\left( {1 + \frac{1}{x}} \right)^x}$ then The function $ f (x)$
- Ahas a maxima but no minima
- Bhas a minima but no maxima
- Chas exactly one maxima and one minima
- ✓has neither a maxima nor a minima
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$z^5=1$ then value of $\left| {\begin{array}{*{20}{c}}
{{e^\alpha }}&{{e^{2\alpha }}}&{{e^{3\alpha + 1}}}&{ - {e^{ - \delta }}} \\
{{e^\beta }}&{{e^{2\beta }}}&{{e^{3\beta + 1}}}&{ - {e^{ - \delta }}} \\
{{e^\gamma }}&{{e^{2\gamma }}}&{{e^{3\gamma + 1}}}&{ - {e^{ - \delta }}}
\end{array}} \right|$