MCQ
જો $f(x)=\frac{2x+1}{3x-2}$ હોય, તો $(fof)(2)=$ .................
- A$1$
- B$3$
- C$4$
- ✓$2$
$f(2)=\frac{2(2)+1}{3(2)-2} = \frac{5}{4}$
$f\left(\frac{5}{4}\right)=\frac{2 \times \frac{5}{4}+1}{3 \times \frac{5}{4}-2} =\frac{10+4}{15-8}=\frac{14}{7}=2$
$(fof)(2)$
$=f(f(2))$
$=f\left(\frac{5}{4}\right)=2$
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