Mathematics 39 Online
OpenStudy (anonymous):

Evaluate the following definite integrals

OpenStudy (anonymous):

$\int\limits_{3}^{4}2\sin2x dx$

OpenStudy (anonymous):

wolframalpha.com

myininaya (myininaya):

u=2x du=2dx if x=4, u=8 if x=3, u=6 $\int\limits_{6}^{8}sinu du=-cosu|=-\cos8+\cos6$

OpenStudy (anonymous):

yea thats what i got... my teacher must have put something in incorrectly...

myininaya (myininaya):

why?

OpenStudy (anonymous):

i dunno... ive done it like 10 times and i keep getting 1.11 (same as my tutor) but Lecturer got 0.88 :S:S:S

myininaya (myininaya):

did you have it in radians or degrees?

OpenStudy (anonymous):

radians and degrees gegrees i got .81 or something like that but not .88

myininaya (myininaya):

OpenStudy (anonymous):

yea... guessed as much lol.. >.< thanks though :D (currently writing cheat sheet for exam tomorrow) >.<

Latest Questions
REYSHAWN23134: Hello guys. How are you all
1 hour ago 0 Replies 0 Medals
Gucchi:  english help
1 hour ago 5 Replies 0 Medals
Gucchi: english help
2 hours ago 11 Replies 1 Medal
Gucchi: english help
3 hours ago 16 Replies 3 Medals
luhivqqcherry: guys so what will happen if I don't get my iron up fast enough ? .
3 hours ago 15 Replies 2 Medals
luhivqqcherry: how do I fix low iron ?
3 hours ago 64 Replies 0 Medals