<human>:  How can I format a float using matplotlib's LaTeX formatter?
<bot>: Here is some code to format float `3.5e+20` to `$3.5 \\times 10^{20}$` and set as title of matplotlib plot `ax`

ax.set_title('$%s \\times 10^{%s}$' % ('3.5', '+20'))

#Warning: this code generation is experimental. Please inspect the code for any bugs before executing.