Glkka0lo6lSilvarrio Glkka0lo6lSilvarrio
  • 22-02-2017
  • Mathematics
contestada

Find two numbers whose difference is 200 and whose product is a minimum

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apologiabiology
apologiabiology apologiabiology
  • 22-02-2017
x-y=200
xy=mn

so
first equation times -1 and add x both sides
y=x-200
sub that for y in other equation
x(x-200)=min
x²-200x=min
take deritivive
2x-200=min
find where it equals 0
2x-200=0
2x=200
x=100

y=x-200
y=100-200
y=-100


the numbers aer 100 and -100


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