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2. Polynomials
easy
Write the coefficients of $x^2$ in each of the following :
$(i)$ $\frac{\pi}{2} x^{2}+x$ $ (ii)$ $\sqrt{2} x-1$
A
$\frac{\pi}{2}$ and $0$
B
$\pi $ and $0$
C
$2$ and $0$
D
$\frac{\pi}{2}$ and $\pi $
Solution
$(i)$ $\frac{\pi}{2} x^{2}+x$
The co-efficient of $x^{2}$ is $\frac{\pi}{2}$.
$(ii)$ $\sqrt{2} x-1$ $\because \sqrt{2} x-1$ $\Rightarrow \sqrt{2} x-1+0 \cdot x^{2}$
$\therefore$ The co-efficient of $x^{2}$ is $0 .$
Standard 9
Mathematics
