TheCalcHater
  • TheCalcHater
A calc question....
Mathematics
  • Stacey Warren - Expert brainly.com
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SOLVED
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jamiebookeater
  • jamiebookeater
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TheCalcHater
  • TheCalcHater
This is calc homework.... Can we go from 1 then 2 then 3?
TheCalcHater
  • TheCalcHater
Is this right for number 2? Dv/dt = (4/3) (3r^2) dr/dt 4 = (4/3) (3) (1)^2 dr/dt dr/dt = 1/ inch per second
TheCalcHater
  • TheCalcHater
@dan815

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More answers

dan815
  • dan815
okay so number 1
dan815
  • dan815
are u familiar with newtons method?
TheCalcHater
  • TheCalcHater
not really.... Was number 2 right?
dan815
  • dan815
let me read
dan815
  • dan815
http://prntscr.com/9e96dm
dan815
  • dan815
|dw:1450135389832:dw|
dan815
  • dan815
|dw:1450135477077:dw|
dan815
  • dan815
|dw:1450135520553:dw|
TheCalcHater
  • TheCalcHater
So yep it is 1/pi per second?
dan815
  • dan815
yes
dan815
  • dan815
1/pi inches per second
TheCalcHater
  • TheCalcHater
ok so that one is done.... now we can do number 1.
dan815
  • dan815
okay so newtons method is a very simple concept
dan815
  • dan815
|dw:1450135650140:dw|
dan815
  • dan815
okay so lets say we haev a function like this, and u want to see the roots ie where the x intercepts are
dan815
  • dan815
the idea is to take some random guess lets say we take the guess 10
dan815
  • dan815
|dw:1450135719844:dw|
TheCalcHater
  • TheCalcHater
it is asking for it on the interval though....
dan815
  • dan815
ah im just giving u the basic explanation of newtons method
dan815
  • dan815
so the point is to take a guess see what the y value at that x is, then to draw a tangent line from there and see the intersection on the x axis and this intersection is your new guess
TheCalcHater
  • TheCalcHater
oh ok.
dan815
  • dan815
|dw:1450135885360:dw|
dan815
  • dan815
okay so can you come up with the equations for th tangent line and the intersection at the x axis now
TheCalcHater
  • TheCalcHater
what point does it intersect the x axis?
dan815
  • dan815
lets start with the tangent line equation first
dan815
  • dan815
so we have f(x) we take a guess call it g1 (g1,f(g1)) is a point on the curve what is the tangent line there?
dan815
  • dan815
the tangent line equation at that point
TheCalcHater
  • TheCalcHater
I dont know we dont know the secant line.
dan815
  • dan815
we are given a function f(x)
dan815
  • dan815
what do u know in calculus that gives u slopes at points
TheCalcHater
  • TheCalcHater
the derivative!
dan815
  • dan815
y=mx+b, lets try to work out the tangent line equation one part at a time so what is m?
TheCalcHater
  • TheCalcHater
the slope and b is the y intercept
dan815
  • dan815
we have some function f(x) what is the tangent line slope at the point (g1,f(g1))
dan815
  • dan815
|dw:1450136132281:dw|

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