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If f(x - 1) = 2x - 3, then f (x) :
1. x - 2
2. 2x - 1
3. 3x + 2
4. 2x + 1

1 Answer

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Best answer
Correct Answer - Option 2 : 2x - 1

Given:

f(x - 1) = 2x - 3

Calculation:

Let t = x – 1

⇒ x = t + 1

Now,

 ⇒ f(x) = 2(t + 1) – 3

⇒ f(x) = 2t + 2 – 3

⇒ f(x) = 2t – 1

Replacing t with x

⇒ f(x) = 2x – 1

∴ Required value of f(x) is 2x – 1

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