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SETS — MATHS STD 11 Science — Question

Gujarat BoardEnglish MediumSTD 11 ScienceMATHSSETS1 Mark
MCQ
The range of the function f(x) = 3x - 2‚ is.
  • ✓
    $(-\infty,\infty)$
  • B
    $\text{R}-(3)$
  • C
    $(-\infty,0)$
  • D
    $(0,- \infty)$
✓

Answer

Correct option: A.
$(-\infty,\infty)$
Let the given function is
y = 3x - 2
⇒ y + 2 = 3x
$\Rightarrow \text{x} =\frac{(\text{y}+2)}{3}$
Now x is satisfied by all values.
So, Range {f(x)} = R $=(-\infty,\infty)$

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