im trying to plot a function in specific range where the function is negative.
this is what i get:
Plot[(f[x], {x, -10, 10}, PlotRange -> Full]
how can i flip the y axis to point downwards? also, there is an option to see the positive y axis however my function does not have any positive value?
thanks!

Plot'sdocumentation? Take a look at Options / PlotRange and ScallingFunctions. – Kuba Apr 23 '18 at 19:21