Question on: JAMB Mathematics - 1992
Evaluate the integral \(\int^{\frac{\pi}{4}}_{\frac{\pi}{12}}\) 2 cos 2x dx
A
-\(\frac{1}{2}\)
B
-1
C
\(\frac{1}{2}\)
D
1
Ask EduPadi AI for a detailed answer
Correct Option: C
let I = \(\int^{\frac{\pi}{4}}_{\frac{\pi}{12}}\) 2 cos 2x dx
= 2(sin 2x)\(\frac{\pi}{4}\) (sin 2x)\(\frac{\pi}{4}\)\(\frac{\pi}{12}\)
(2)\(\frac{\pi}{12}\)
= -1 - \(\frac{1}{2}\)
= \(\frac{1}{2}\)
= 2(sin 2x)\(\frac{\pi}{4}\) (sin 2x)\(\frac{\pi}{4}\)\(\frac{\pi}{12}\)
(2)\(\frac{\pi}{12}\)
= -1 - \(\frac{1}{2}\)
= \(\frac{1}{2}\)
Add your answer
Please share this, thanks!
No responses