Set, Relations and FunctionsPYQ Jun 23Question 1972 of 136
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If f(x):N→R\displaystyle f(x): N \to R is a function defined as f(x)=4x+3\displaystyle f(x) = 4x+3, ∀x∈N\displaystyle \forall x \in N, then f−1(x)\displaystyle f^{-1}(x) is:

Options

A4+x4\displaystyle \frac{4+x}{4}
Bx+34\displaystyle \frac{x+3}{4}
Cx−34\displaystyle \frac{x-3}{4}
Dx+44\displaystyle \frac{x+4}{4}
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Correct Answer

✅ Option c — x−34\displaystyle \frac{x-3}{4}

All Options:

  • A4+x4\displaystyle \frac{4+x}{4}
  • Bx+34\displaystyle \frac{x+3}{4}
  • Cx−34\displaystyle \frac{x-3}{4}
  • Dx+44\displaystyle \frac{x+4}{4}

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