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**11rdc11** $\displaystyle cos^2x = \frac{1 + cos2x}{2}$

$\displaystyle \frac{1}{2}\int{dx} +\frac{1}{2}\int{cos2x}{dx} = \frac{x}{2} +\frac{sin2x}{4}$

Hope this helps.

Oops was to slow lol, just wondering how do you place upper and lower bounds in latex?

Do:

Code:

[tex]\int_a^b f(x)\,dx[/tex]

To get $\displaystyle \int_a^b f(x)\,dx$

note if we have limits like $\displaystyle -\ln2$ to $\displaystyle \ln2$, then you need to put these within {} such as:

Code:

[tex]\int_{-\ln(2)}^{\ln2} e^x\,dx[/tex]

will output $\displaystyle \int_{-\ln(2)}^{\ln2} e^x\,dx$

--Chris