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I am a beginner using Mathematica. I would like to know how to express for example a function that depends on three variables and to calculate it using a IF BLOCK.

I have the following function:

a(y,w,d)=(acos((w-y)/d)*d^2-sin(acos((w-y)/d))*(w-y)*d)

and I want to evaluate it, to evaluate this function I have to write a IF BLOCK like the following

IF (w-y)<d then

IF (w-y)>0 then

Gnuplot muss evaluate a(y,w,d)

else is pi*d^2

else cero.

I have attempt it. But only it works when I put a(y,w,d) if only depends on y, but it depends also from w and d.

Might anybody help me?

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# Mathematica IF BLOCK

Can you offer guidance or do you also need help?

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