divide 80 into two part such that there product is maximum
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It is 40 and 40.....ok
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let one part be x then other part is 80-x
now (x)×(80-x) is max.
to find out differentiate with respect to x we get x=40
so the two parts are 40 and 40
now (x)×(80-x) is max.
to find out differentiate with respect to x we get x=40
so the two parts are 40 and 40
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