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anonymous
 one year ago
When looking at a rational function f of x equals the quantity x minus six times the quantity x plus three times the quantity x plus four all divided by the quantity x plus six times the quantity x minus three times the quantity x minus four, Jamal and Angie have two different thoughts. Jamal says that the function is defined at x = –6, x = 3, and x = 4. Angie says that the function is undefined at those x values. Who is correct? Justify your reasoning.
anonymous
 one year ago
When looking at a rational function f of x equals the quantity x minus six times the quantity x plus three times the quantity x plus four all divided by the quantity x plus six times the quantity x minus three times the quantity x minus four, Jamal and Angie have two different thoughts. Jamal says that the function is defined at x = –6, x = 3, and x = 4. Angie says that the function is undefined at those x values. Who is correct? Justify your reasoning.

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anonymous
 one year ago
Best ResponseYou've already chosen the best response.0dw:1438186410074:dw

welshfella
 one year ago
Best ResponseYou've already chosen the best response.1(x  6)(x + 3)( x + 4)  (x + 6)(x  3)(x  4)

welshfella
 one year ago
Best ResponseYou've already chosen the best response.1if x = 6 what do you think the value of the denominator is?

welshfella
 one year ago
Best ResponseYou've already chosen the best response.1(6 + 6)(x  3)(x  4) = 0(x + 3)(x  4)

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0Any of the 3 values subbed in will give you a divide by 0 situation.

welshfella
 one year ago
Best ResponseYou've already chosen the best response.1do you follow that @CUTIEPIEI37/

welshfella
 one year ago
Best ResponseYou've already chosen the best response.1if we any of the factors are 0 it will make the whole demnominator = 0

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0oh ok so then the whole function is zero

welshfella
 one year ago
Best ResponseYou've already chosen the best response.1if x = 3 then we have (x + 6) * 0 * (x + 4) = 0

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0Anything divide by zero is undefined.

welshfella
 one year ago
Best ResponseYou've already chosen the best response.1no only the denominator but dividing by zero doesn't make sense so we say the value of the function is indeterminate

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0Using limit on it doesn't work either cause it diverges.

welshfella
 one year ago
Best ResponseYou've already chosen the best response.15/0 for example does not make any sense  you add an infinite number of zeros together and thay;ll never make 5!!

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0it wil still be undefined

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0As your denominator goes smaller, your answer gets larger and large towards infinity. For example: \[\frac{ 1 }{ 0.1 } = 10\] \[\frac{ 1 }{ 0.000001 } = 1000000\] You can see the pattern.

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0thank you you guys thank you so much i think i might be able to explain it thank you

iseeunicorns
 10 months ago
Best ResponseYou've already chosen the best response.0@iwanttogotostanford hope this helps :))

seb.cal
 10 months ago
Best ResponseYou've already chosen the best response.0@welshfella In your second comment, you wrote x = 6. did you make up that number? Or did you get it from solving anything?

welshfella
 10 months ago
Best ResponseYou've already chosen the best response.1I chose it because it made (x +6) equal to zero
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