MCQ
Derivative of $x^n$ is equal to :
- A$x^{n-1}$
- B$(n-1) ~x^{n-2}$
- ✓$n~ x^{n-1}$
- D$\frac{x^{n+1}}{n+1}$
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The standard deviation of some temperature data in °C is 5. If the data were converted into °F, the variance would be: