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/sci/ - Science & Math

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4446528 No.4446528 [Reply] [Original]

I have a challenge for you /sci/. Create a single equation using P=2L+2W for the construction of a box (without a lid) out of a sheet of cardboard where four squares are taken out of a rectangle then folded up.

The rectangle is 12cm wide and 16cm long and the final box must have a length that is 2 times the width minus 5

Set up the equation in such a way that x is the lengh of one side of the square, and that P=P.

I'd like to see if you brainiacs can tackle this one.

>> No.4446530

homework thread detected

>> No.4446537

do your own homework.

>> No.4446538

>>4446528

OP its usually just better to just straight out ask if we can do your homework

>> No.4446553

>>4446528
P = X (12-2X) (16-2X)
do your own homework

>> No.4446554

>>4446553
fuck me that is volume. disregard that

>> No.4446563

man this shit is so hard, i can't even do it. also fuck yourself op

>> No.4446569

>>4446528
OP, what does the equation need to model? Volume? Perimeter?
If it is volume, then >>4446553 is right

>> No.4446572

Op here, not homework, not in school. Plus I know the answer.

>> No.4446574

hello

>> No.4446584

>>4446572
OP fuck you, this is a textbook Calc I problem.
Enjoy your homework faggot

>> No.4446592
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4446592

This diagram might make it easier.

Also this is basic algebra.

>> No.4446604

I remember this problem. My professor used it to explain limits and it was pretty effective.

SAT trick: When it comes to problems that require you to calculate the max/min area as a function of the linear units, remember that area has [M]² units, meaning that you will probably have a quadratic equation somewhere. Since the area will be zero on the extremes (when you have retarded stuff like sides with 0 length), you can assume it will be max on the middle of the interval, since the graph of a quadratic equation is a parable.

This doesn't apply here tho. Not entirely sure why I typed this. It's late, I don't care

>> No.4446613

>>4446604
I love parables. My favorites are those by Aesop.

>> No.4446620
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4446620

>>4446528
>mfw you saved one of my architect pictures

>> No.4446670

test