Homework Statement
\int\frac{sin(2x)}{1+cos(x)^2}
Homework Equations
None?
The Attempt at a Solution
I know I can use a trig identity to end up with a numerator of -- 2sin(x)cos(x)
So:
\int\frac{2sin(x)cos(x)}{1+cos(x)^2}
I am using u=1+cos(x)^2 and...
Is anyone here able to help me or point me in the right direction?
Iron ores often involve a mixture of oxides and contain both Fe 2+ and Fe 3+ ions. Such an ore may be analyzed for its iron content by dissolving it in an acidic solution, reducing all of the iron to Fe 2+ ions and then...