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DB_2017
HSC - উচ্চতর গণিত ১ম পত্র
→
অধ্যায়-১০ঃ যোগজীকরণ
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f
(
x
)
=
sin
2
x
f(x)=\sin 2 x
f
(
x
)
=
sin
2
x
হলে -
i.
lim
x
→
0
(̸
x
)
2
x
=
1
ii.
f
′
(
x
)
=
2
cos
2
x
iii.
∫
f
(
x
)
d
x
=
cos
2
x
+
c
\begin{array}{l}\text{i. } \quad \lim _{x \rightarrow 0} \frac{\not(x)}{2 x}=1\\\text{ii. } f^{\prime}(x)=2 \cos 2 x\\\text{iii. } \int f(x) \mathrm{dx}=\cos 2 \mathrm{x}+\mathrm{c}\end{array}
i.
lim
x
→
0
2
x
(
x
)
=
1
ii.
f
′
(
x
)
=
2
cos
2
x
iii.
∫
f
(
x
)
dx
=
cos
2
x
+
c
নিচের কোনটি সঠিক?
A.
i ও ii
B.
i ও iii
C.
ii ও iii
D.
i,ii,ও iii
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f(x)=\sin 2 x হলে - \begin{array}{l}\text{i. } \quad \lim _{x \rightarrow 0} \frac{\not(x)}{2 x}=1\\\text{ii. } f^{\prime}(x)=2 \cos 2 x\\\text{iii. } \int f(x) dx=\cos 2 x+c\end{array} নিচের কোনটি সঠিক?
