Hi math experts - trying to kick start my old math and log skills.

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In the attached screenshot from Wikipedia the sRGB transfer function x^2.2 is plotted in log-log space (blue slope). How do I interpret interpret the y axis from the x values in the example?

Also, in general what are the main applications for log-log space plots?

Need to do my homework but hope for a pointer in the right direction.

Thanks,

Mikael

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