Differential Equations PLEASE

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  • #1
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Differential Equations PLEASE!!

**problem solved**
 
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  • #2
nicksauce
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It seems that you didn't multiply tan(x) with the -cos(x) term.
 
  • #3
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It seems that you didn't multiply tan(x) with the -cos(x) term.

i turned tan(x) into sinx/cosx and canceled out the cosx, and was left with

-sin^2 x + cos^2 x + sinx + sin^2 x -cosx = cos^2 x

any ideas?
 
  • #4
nicksauce
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Like I said, you wrote:

-sin^2 x + cos^2 x +sinx +[tan x] sinxcosx -cosx = cos^2x

When it should be:

-sin^2 x + cos^2 x +sinx +[tan x]( sinxcosx -cosx) = cos^2x
 
  • #5
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Like I said, you wrote:

-sin^2 x + cos^2 x +sinx +[tan x] sinxcosx -cosx = cos^2x

When it should be:

-sin^2 x + cos^2 x +sinx +[tan x]( sinxcosx -cosx) = cos^2x

aww, such a simple mistake, thanks a lot :)
 

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