# Can I graph display maths? [closed]

I'd like to graph these expressions

1. \frac1{2\pi}\int_{-\pi}^\pi{f(x)}dx+\sum_{n=1}^2\left[\left(\frac1\pi\int_{-\pi}^\pi{f(x)}\cos(nx)dx\right)\cos(nx)+\left(\frac1\pi\int_{-\pi}^\pi{f(x)}\sin(nx)dx\right)\sin(nx)\right]

2. \frac1{2\pi}\int_{-\pi}^\pi{f(x)}dx+\sum_{n=1}^5\left[\left(\frac1\pi\int_{-\pi}^\pi{f(x)}\cos(nx)dx\right)\cos(nx)+\left(\frac1\pi\int_{-\pi}^\pi{f(x)}\sin(nx)dx\right)\sin(nx)\right]

3. \frac1{2\pi}\int_{-\pi}^\pi{f(x)}dx+\sum_{n=1}^{10}\left[\left(\frac1\pi\int_{-\pi}^\pi{f(x)}\cos(nx)dx\right)\cos(nx)+\left(\frac1\pi\int_{-\pi}^\pi{f(x)}\sin(nx)dx\right)\sin(nx)\right]


Is it possible to graph them without having to tediously convert them all into pgfplots-maths by hand?

• A related topic that might help. Commented Oct 7, 2017 at 18:04
• What do you want to graph there? These expression just evaluate to some number. To graph something you need a parameter. Commented Oct 11, 2017 at 7:28
• @HenriMenke x is the variable. I realise I made a mistake though, the x in the cosnx and sinnx parts is the variable to graph against, the x inside of the integrals should be a separate varaible Commented Oct 11, 2017 at 17:23
• Possible duplicate of How to plot a function in integral form with TikZ? Commented Oct 11, 2017 at 22:49