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MHT CET · Maths · Differentiation

If \(x=e^{(y+e)^{(y+e)}(y+\ldots \ldots \infty)}\), then \(\frac{d y}{d x}=\)

  1. A \(\frac{1-x}{x}\)
  2. B \(\frac{1+x}{x}\)
  3. C \(\frac{1}{x}\)
  4. D \(\frac{x}{1+x}\)
Verified Solution

Answer & Solution

Correct Answer

(A) \(\frac{1-x}{x}\)

Step-by-step Solution

Detailed explanation

Here \(x=e^{y+x}\)
Differentiating w.r.t. \(\mathrm{x}\)
\(
\begin{array}{l}
1=e^{y+x}\left(\frac{d y}{d x}+1\right) \Rightarrow 1=e^{y+x} \frac{d y}{d x}+e^{y+x} \\\therefore 1=x \cdot \frac{d y}{d x}+x \\
\frac{d y}{d x}=\frac{1-x}{x}
\end{array}
\)