anonymous
  • anonymous
Determine an expression for the cost
Mathematics
schrodinger
  • schrodinger
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anonymous
  • anonymous
Pi = MC squared + the radius of pathagorean theorum divided by the square root of exponent X
anonymous
  • anonymous
lol
anonymous
  • anonymous
i don't either.

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anonymous
  • anonymous
its correct assuming you buy more than 100 chips, otherwise, no
anonymous
  • anonymous
you can define the cost function with the restricted domains
anonymous
  • anonymous
yes, use a piece-wise function
anonymous
  • anonymous
a piece-wise function
anonymous
  • anonymous
also you should usee p instead of n, as the question asked for that
anonymous
  • anonymous
yes
anonymous
  • anonymous
you'll need to give C no matter what amount is purchased though...
anonymous
  • anonymous
p>=100
anonymous
  • anonymous
\[[100, \infty)\]
anonymous
  • anonymous
for 0<=p<100 C(P)=200
anonymous
  • anonymous
C(P)=2p rather lol
anonymous
  • anonymous
its a piece-wise function and is linear
anonymous
  • anonymous
yw
anonymous
  • anonymous
I'm wondering if they also want it for under 100. Then you'd have two piecewise functions. c(n)=2n, n≤100 c(n) = 200+1.75(n-100) when n>100
anonymous
  • anonymous
But the first part... would they want that as well?
anonymous
  • anonymous
Oh I see.
anonymous
  • anonymous
Sorry, I didn't read through all the comments...
anonymous
  • anonymous
It's just a line. First, get it in slope-intercept form. c(n) = 200+1.75(n-100) = 200 +1.75n - 175 c(n)=1.75n +25 Your y-intercept is 25. Your slope is 1.75.
anonymous
  • anonymous
Looks good.
anonymous
  • anonymous
just in case, because the problem did not state that they'll aways buy more than 100 chips, the function should look like this:|dw:1333233617956:dw|
anonymous
  • anonymous
@dpaInc That's what I was thinking too. It's better safe than sorry if they don't specify "over 100 chips"
anonymous
  • anonymous
Should be integers I think.
anonymous
  • anonymous
since you can't have half of a chip :-)
anonymous
  • anonymous
for the piece-wise function theres an implied domain of [0, infinity) because you wouldn't purchase negative chips
anonymous
  • anonymous
but you could purchase 0, and as brinethery said, you'd want to restrict it to integers
anonymous
  • anonymous
you could just say all whole numbers

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