Economics Homework Help

Economics Homework Help. Partial derivatives please help!!

find the following partial derivatives ay/ax

1. y= 7x,   2.y= 2x^2-3x+7  3. -3x^-3+7/x-4x^2+100

can someone also explain to me how it works I got 0 for the 1st one, but I just want to be sure

Economics Homework Help

 
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