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mr.luna
A = bh/2 A' = b'h/2 + bh'/2 b' = (A' - bh'/2)(2/h) can someone explain this. its steps to the derivative of bh/2.
You need an explanation of the entire thing, or the last simplification?
uh, whole thing, why is product rule used for the second step and not quotient rule since its divided by 2, and i need help simplying step 2 to 3
Well the only variables are b and h on the right hand side, so the 2 is just a coefficient.... You can just rewrite it as : (1/2)(bh) and do product rule for bh
so by what i said (1/2) (bh' + b'h)
and then you just isolate b'