यदि $f: R \rightarrow R$ जहाँ $f(x)=5 x+4$ तो $f^{-1}(x)$ निम्नलिखित में कौन होगा?
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यदि $f: R \rightarrow R$ जहाँ $f(x)=5 x+4$ तो $f^{-1}(x)$ निम्नलिखित में कौन होगा?

यदि $f: R \rightarrow R$ जहाँ $f(x)=5 x+4$ तो $f^{-1}(x)$ निम्नलिखित में कौन होगा?
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यदि $f: R \rightarrow R$ जहाँ $f(x)=5 x+4$ तो $f^{-1}(x)$ निम्नलिखित में कौन होगा?

(A) $\frac{x-5}{4}$

(B) $\frac{x-4}{5}$

(C) $\frac{x}{5}-4$

(D) $\frac{x}{4}-5$

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सही उत्तर होगा : विकल्प (B) $\frac{x-4}{5}$

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