nvm 243/8 and its about y
so use 5, -4 as the limits
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OpenStudy (ksaimouli):
how did u get thoe -4 and -5
OpenStudy (ksaimouli):
\[0=4+4x\]
OpenStudy (ksaimouli):
\[0=-16-4x\]
OpenStudy (anonymous):
right
what u need to do is set the equations equal to each other. You do this by putting them both in terms of y.
so x=\[\frac{ 16+y }{ 4}\]
and x=\[\frac{ y^2-4 }{ 4 }\]
so solve and get y=5,-4
OpenStudy (anonymous):
does this make sense? if u graph it...you would integrate about the y...
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OpenStudy (ksaimouli):
did u set them =0
OpenStudy (anonymous):
no...
OpenStudy (anonymous):
you set them equal to each other...and when you move the equations to one side. you have a zero on the othe rside
OpenStudy (ksaimouli):
never mind got it
OpenStudy (anonymous):
kk am i best responder
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OpenStudy (anonymous):
it would really help to give me a medal :D
OpenStudy (anonymous):
for all my hard work
zepdrix (zepdrix):
lol
OpenStudy (anonymous):
lol im a noob only lvl 52
OpenStudy (anonymous):
yusss beat you all to it :p
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OpenStudy (anonymous):
Take a look:
Integrate 2sqrt(4 + 4x) from x = -1 to 3
and then integrate sqrt(4 + 4x) - (4x - 16) from x = 3 to 5.25
add them