#cubic question

1 messages · Page 1 of 1 (latest)

wild trail
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how would i do B?

lone wasp
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is the mistake that there's meant to be an ax³

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if so

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use the coordinates (-2,32)

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so you have y=a(x+6)(x-6)²

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sub in the coordinates

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solve for a

wild trail
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the mistake was assumed the coefficient of x^3 is 1

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ill try bro give me like 2 min

lone wasp
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yes i thought right

wild trail
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i got 8

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but seems wrong

lone wasp
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why would it be wrong

wild trail
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i dont know if i did it right

lone wasp
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you can't mess it up really

wild trail
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the markscheme is different tho so i some how messed up

lone wasp
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32=a(-2+6)(-2-6)²
32=a(4)(64)
32=256a
a=1/8

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i got 1/8

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what is ms

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answer

wild trail
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ohh my days i did 256/32 im so tired

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its crazy

lone wasp
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bahaha

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happens

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i do the same shit all the time

wild trail
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this is why you get 8 hours

lone wasp
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even worse when i have to do work at 9am

wild trail
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and then from there what do i have to do to get the full equation

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oh wait i know

lone wasp
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you can just times everything by 1/8

wild trail
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ye brain is so slow its crazy