Quick Math Question

jessicak

Senior member
Aug 15, 2003
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I am doing an Integral problem and I am stuck. I need to know what the trig identity for sin2x is. Thanks
 

Hammyton

Senior member
Jul 9, 2002
515
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Originally posted by: Pokey007
Originally posted by: Heisenberg
2 *sin(x)*cos(x)

yup, Heisenberg isn't uncertain about that principle.



rolleye.gif
 

VTboy

Banned
Oct 13, 2003
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If you are doing the integral of sin(2x) then it is just -cos(2x)/2. No need to use trig identity
 

jessicak

Senior member
Aug 15, 2003
542
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0
Originally posted by: VTboy
If you are doing the integral of sin(2x) then it is just -cos(2x)/2. No need to use trig identity

its not just sin2x...there's other stuff too and I have to use usub to cancel stuff
 

upsciLLion

Diamond Member
Feb 21, 2001
5,947
1
81
Originally posted by: jessicak
Originally posted by: VTboy
If you are doing the integral of sin(2x) then it is just -cos(2x)/2. No need to use trig identity

its not just sin2x...there's other stuff too and I have to use usub to cancel stuff

I miss calculus. :(
 

eakers

Lifer
Aug 14, 2000
12,169
2
0
Originally posted by: upsciLLion
Originally posted by: jessicak
Originally posted by: VTboy
If you are doing the integral of sin(2x) then it is just -cos(2x)/2. No need to use trig identity

its not just sin2x...there's other stuff too and I have to use usub to cancel stuff

I miss calculus. :(

you're nuts.

i'm a math student and i know you're nuts.
 

Mday

Lifer
Oct 14, 1999
18,647
1
81
Originally posted by: eakers
Originally posted by: upsciLLion
Originally posted by: jessicak
Originally posted by: VTboy
If you are doing the integral of sin(2x) then it is just -cos(2x)/2. No need to use trig identity

its not just sin2x...there's other stuff too and I have to use usub to cancel stuff

I miss calculus. :(

you're nuts.

i'm a math student and i know you're nuts.

since when are you a math student?
 

eakers

Lifer
Aug 14, 2000
12,169
2
0
Originally posted by: Mday
Originally posted by: eakers
Originally posted by: upsciLLion
Originally posted by: jessicak
Originally posted by: VTboy
If you are doing the integral of sin(2x) then it is just -cos(2x)/2. No need to use trig identity

its not just sin2x...there's other stuff too and I have to use usub to cancel stuff

I miss calculus. :(

you're nuts.

i'm a math student and i know you're nuts.

since when are you a math student?
since 3 years ago when i switched out of chemistry.

 

upsciLLion

Diamond Member
Feb 21, 2001
5,947
1
81
Originally posted by: eakers
Originally posted by: upsciLLion
Originally posted by: jessicak
Originally posted by: VTboy
If you are doing the integral of sin(2x) then it is just -cos(2x)/2. No need to use trig identity

its not just sin2x...there's other stuff too and I have to use usub to cancel stuff

I miss calculus. :(

you're nuts.

i'm a math student and i know you're nuts.

Which is why I switched over to the actuarial science major in place of math ed. :p
 

JayHu

Senior member
Mar 19, 2001
412
0
0
Originally posted by: upsciLLion
Originally posted by: eakers
Originally posted by: upsciLLion
Originally posted by: jessicak
Originally posted by: VTboy
If you are doing the integral of sin(2x) then it is just -cos(2x)/2. No need to use trig identity

its not just sin2x...there's other stuff too and I have to use usub to cancel stuff

I miss calculus. :(

you're nuts.

i'm a math student and i know you're nuts.

Which is why I switched over to the actuarial science major in place of math ed. :p

I think the real problems come when they stop calling it calculus, and they start calling it analysis.. ie.. real analysis..
 

eakers

Lifer
Aug 14, 2000
12,169
2
0
Originally posted by: JayHu
Originally posted by: upsciLLion
Originally posted by: eakers
Originally posted by: upsciLLion
Originally posted by: jessicak
Originally posted by: VTboy
If you are doing the integral of sin(2x) then it is just -cos(2x)/2. No need to use trig identity

its not just sin2x...there's other stuff too and I have to use usub to cancel stuff

I miss calculus. :(

you're nuts.

i'm a math student and i know you're nuts.

Which is why I switched over to the actuarial science major in place of math ed. :p

I think the real problems come when they stop calling it calculus, and they start calling it analysis.. ie.. real analysis..

i have my functional analysis midterm next week.

*whimpers*