Thank you for registering.

One of our academic counsellors will contact you within 1 working day.

Please check your email for login details.
MY CART (5)

Use Coupon: CART20 and get 20% off on all online Study Material

ITEM
DETAILS
MRP
DISCOUNT
FINAL PRICE
Total Price: Rs.

There are no items in this cart.
Continue Shopping

Could you please tell whether this answer is correct or not? If it is wrong, please tell the right answer?

Could you please tell whether this answer is correct or not? If it is wrong, please tell the right answer?

Question Image
Grade:

1 Answers

Aditya Gupta
2075 Points
one year ago
in the 2nd last step u hve got 
¼ * ( – 3/2 cos(2x+1) + cos(6x+3)/6 )
= – 3/8 cos(2x+1) + cos(6x+3)/24, hence your last step has a mistake of multiplication.
also, another easy way to do this ques can be as follows:
put t= 2x+1
so we have ½ *∫sin^3t dt
now, for ∫sin^3t dt, put cost= u and write ∫sin^3t dt= ∫sin^2t * sint dt= ∫(1 – cos^2t) * sint dt and solve further
kindly approve :))

Think You Can Provide A Better Answer ?

Provide a better Answer & Earn Cool Goodies See our forum point policy

ASK QUESTION

Get your questions answered by the expert for free