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Question : 72 of 160
Marks:
+1,
-0
Solution:
Let's call the integral
I.
I=∫‌‌dxLet's make a substitution. Set
t=‌.
Now, calculate the derivative of
t with respect to
x :
‌=‌=‌So,
dt=‌‌dx.
This shows that the part inside our integral,
‌‌dx, is simply
dt.
So the integral becomes
I=∫dt=t+C.
Recall
t=‌, so the answer is
I=‌+C.
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