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Algebraic Expressions — MATHS STD 7 — Question

Gujarat BoardEnglish MediumSTD 7MATHSAlgebraic Expressions1 Mark
MCQ
If ${\text{f (x)}} = \frac 53 {\text{x}}^2$ then $\text{f }\Big(\dfrac 35\Big)$ is:
  • A
    $\frac{1}{5}$
  • B
    $\frac{1}{3}$
  • ✓
    $\frac{3}{5}$
  • D
    $\frac{4}{5}$
✓

Answer

Correct option: C.
$\frac{3}{5}$
$\text{f(x)} = \frac{5}{3}{\text{x}}^{2}\text{f}\Big(\frac{3}{5}\Big)= \frac{5}{3}\Big(\frac{3}{5}\Big)^{2}\Rightarrow\frac{ 5}{3} \times \frac{ 3}{5}\times \frac{3}{5}\Rightarrow\frac{3}{5}$

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