# single solution?

• June 7th 2009, 08:10 AM
dhiab
single solution?
For any values of the real number a is equivalent to a single solution?
• June 7th 2009, 08:45 AM
running-gag
Quote:

Originally Posted by dhiab
For any values of the real number a is equivalent to a single solution?

Hi

Note that $1+\sin^2(ax) \geq 1$ and $\cos x \leq 1$

The only possibility to get the equation correct is therefore

$1+\sin^2(ax) = \cos x = 1$ that I let you solve
• June 7th 2009, 03:59 PM
Rachel.F
Quote:

Originally Posted by running-gag
Hi

Note that $1+\sin^2(ax) \geq 1$ and $\cos x \leq 1$

The only possibility to get the equation correct is therefore

$1+\sin^2(ax) = \cos x = 1$ that I let you solve

How do you know that $1+\sin^2(ax) = \cos x$ ??
• June 8th 2009, 11:28 AM
running-gag
Quote:

Originally Posted by Rachel.F
How do you know that $1+\sin^2(ax) = \cos x$ ??

Well this is the equation to be solved