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f(3)=f(3-1)-0.25
We move all terms to the left:
f(3)-(f(3-1)-0.25)=0
We add all the numbers together, and all the variables
f3-(f2-0.25)=0
We add all the numbers together, and all the variables
f^3-(f2-0.25)=0
We get rid of parentheses
f^3-f2+0.25=0
We do not support efpression: f^3
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