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# [FP3 Hyperbolics] Simultaneous Equations Help watch

1. I have tried pretty much everything I can think, tried making them equal each other with one squared or both squared etc and what always happens is that i have it finally simplified but than the cosh(x)s or cosh(y)s cancel out so I get no answer. Maybe I am not seeing something..
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2. Multiply the second equation by 2 and equate both equations. Turn the equations in terms of natural logs and solve.

3. I don't know if this helpful but here you go any ways.

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4. (Original post by Nirm)
I have tried pretty much everything I can think, tried making them equal each other with one squared or both squared etc and what always happens is that i have it finally simplified but than the cosh(x)s or cosh(y)s cancel out so I get no answer. Maybe I am not seeing something..
solve the first equation for coshx
solve the second equation for sinhx

square them

subtract them

....
5. Probs easier if you write them in terms of e
6. X= log(3-root6). Y=log(-(root6-3)(5+2)root6))

X= log(3+root6). Y=log(-(3+root6)(2root6-5))

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7. Thank you for the help everyone!
8. (Original post by Nirm)
Thank you for the help everyone!
it was a toughish question without calculator so "I stole it" ...
9. (Original post by TeeEm)
it was a toughish question without calculator so "I stole it" ...
FP3 is such a pain in the ass, only thing I have to learn from is the edexcel book pretty much. Anyone who gets 100 UMS in that module.. hats off to them. Wish I had a had a brain like yours... , would just whizz through all of FP3 in no time .
10. (Original post by Nirm)
FP3 is such a pain in the ass, only thing I have to learn from is the edexcel book pretty much. Anyone who gets 100 UMS in that module.. hats off to them. Wish I had a had a brain like yours... , would just whizz through all of FP3 in no time .
I can assure you it feels easy now but it did not feel easy when I was a student.

The comments you hear from some people here such as "... I did FP3 in 2 days and got full UMS ..." are cringe-worthy.

Just keep working.

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Updated: October 26, 2015
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