Math & Science ⇒ A very ugly Integral

[EigenGoofy]

The following code produces a ugly integral which is unable to grow up. Also, the size of fractions does not have good proportion with respect to the whole body.

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$\int_{-\infty}^{\infty}\dfrac{\dfrac{\dfrac{x^{2}}{x+5}}{x^{7+\dfrac{x}{6}}}}{x\cdot8}\,\mathrm{d}x$

How can I give my integral a mushroom to grow up as in Supermario? How can I adjust the size of fractions please? Thank you!

[Stefan Kottwitz]

Hi,

you could use the bigints package and its command \bigint. There are further commands for big integrals.
Regarding bigger fractions, you could use font size commands, the relsize package or arrays.

Stefan

[EigenGoofy]

Hi,

you could use the bigints package and its command \bigint. There are further commands for big integrals.
Regarding bigger fractions, you could use font size commands, the relsize package or arrays.

Stefan

Thank you very much, Stefan_K.

After installing the package "bigint" and "relsize", then I tried the following code.

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$\bigint_{-\infty}^{\infty}\dfrac{\dfrac{\dfrac{x^{2}}{x+5}}{x^\mathsmaller{{7+\mathsmaller{\mathsmaller{\dfrac{x}{6}}}}}}}{x\cdot8}\,\mathrm{d}x$

It did not work well. the big integral seemed not big enough; and \mathsmaller worked in some case, but did not work in my case.

I also tried the package "anyfontsize", which seemed unable to work in math mode.

Thanks again, Stefan_K.