If f(x)=x^{n}, where n is a non-negative inte | vedclass

Name: Exam Paper Generator | JEE NEET Paper Generator | Vedclass
Brand: Vedclass
Rating: 5 (35 reviews)

Question

(B) Given $f(x) = x^{n}$.Taking the derivative, we get $f^{\prime}(x) = n x^{n-1}$.Substituting this into the given equation $f^{\prime}(\alpha+\beta)

Vedclass · Accepted Answer

$2$

Vedclass · Answer

(B) Given $f(x) = x^{n}$.Taking the derivative, we get $f^{\prime}(x) = n x^{n-1}$.Substituting this into the given equation $f^{\prime}(\alpha+\beta) = f^{\prime}(\alpha) + f^{\prime}(\beta)$, we have:$n(\alpha+\beta)^{n-1} = n\alpha^{n-1} + n\beta^{n-1}$.For $n 
eq 0$, we can divide by $n$:$(\alpha+\beta)^{n-1} = \alpha^{n-1} + \beta^{n-1}$.If $n=1$, then $(\alpha+\beta)^{0} = \alpha^{0} + \beta^{0} \Rightarrow 1 = 1 + 1$, which is $1 = 2$ (False).If $n=2$, then $(\alpha+\beta)^{2-1} = \alpha^{2-1} + \beta^{2-1} \Rightarrow \alpha+\beta = \alpha+\beta$ (True).If $n=0$, $f(x) = x^{0} = 1$, so $f^{\prime}(x) = 0$. Then $0 = 0 + 0$ (True).However, checking the options provided, $n=2$ is the standard solution for this type of problem.

If $f(x)=x^{n}$, where $n$ is a non-negative integer, then the values of $n$ for which $f^{\prime}(\alpha+\beta)=f^{\prime}(\alpha)+f^{\prime}(\beta)$ for all $\alpha, \beta > 0$ is:

Similar Questions

If $f(x) = \frac{g(x) + g(-x)}{2} + \frac{2}{[h(x) + h(-x)]^{-1}}$,where $g$ and $h$ are differentiable functions,then find $f^{\prime}(0)$.

If $y = \tan^{-1} \left[ \frac{4 \sin 2x}{\cos 2x - 6 \sin^2 x} \right]$,then $\frac{dy}{dx}$ at $x = 0$ is

$\frac{d}{d x}\left[a \tan ^{-1} x+b \log \left(\frac{x-1}{x+1}\right)\right]=\frac{1}{x^4-1}$
$\Rightarrow a-2 b$ is equal to

If $y = \frac{e^x \log x}{x^2}$,then $\frac{dy}{dx} =$

Find the derivative of $f(x) = 3$ at $x = 0$ and at $x = 3$.

Vedclass Test Series

Exam Paper Generator

Online Exam Module