Mimi_x3
A poster consists of a photograph bordered by a 5cm margin. The area of the poster is to be 400cm^2.
(a) Show that the area of the photograph is given by the equation A=500-10x-4000/x
(b) Find the maximum area possible for the photograph.
(There's also a diagram that i will draw)
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Mimi_x3
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|dw:1314955994756:dw|
anhhuyalex
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so what is x again?
Mimi_x3
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What do you mean ? x again ?
Hashir
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plz make a clearer diagram !!!!!
Mimi_x3
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gr8 , okay xD
Hashir
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me me me me me me x3 times boosted !!! virus
Mimi_x3
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|dw:1314956478667:dw|
Mimi_x3
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is it good now ?
Damn , i cant draw on this stupid mouse pad xD
Hashir
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lana u gon from facebook !!!! :(
Mimi_x3
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answer my question pls xD
kushashwa23
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c
kushashwa23
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AR
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Is it a rectangular poster or square?
Mimi_x3
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rectangular
Hashir
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wtf the pic is not loading!!!!!!!11
AR
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Okay.
400cm^2 = (l + 10) * (b + 10)
now actually the area of the picture is lb but with the additional borders on each end it becomes as above.
400 = lb + 10b + 10l + 100
lb = 300 - 10b -10l
And I think I am stuck O.o
Mimi_x3
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awww :(
Mimi_x3
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Never mind Hashir I will work it out myself (:
Hashir
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uploading in 2 min
Mimi_x3
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Okay ty
Hashir
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here it is
Hashir
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uploaded !!!!
Hashir
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i hope u can differentiate that mimi nad then put equal to zero and find x !!
Mimi_x3
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tyvm hashir (:
Hashir
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np you are welcome !!!!!
Mimi_x3
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yup i can differentiate xD
Hashir
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ok i gtg !!! bye
nilankshi
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good harhir
Mimi_x3
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ok byee~
Hashir
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thnkoo!!!!