Alex C.

asked • 12/02/16

X and y intercepts for y= 4x-x^2-3lnx

Hi, Im not sure how to find the intercepts with the ln in the function. 

1 Expert Answer

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Kenneth S. answered • 12/02/16

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To find the x-intercept(s), use a graphing calculator to find the zeros of this function.
 
To find the y-intercept, set x=0 except in this case you cannot because the domain has to be x>0.
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Alex C.

Im not allowed to use a calculator in class. Im not sure if that specific function will be on the test, but its the only one i dont know how to find the x and y intercepts
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12/02/16

Kenneth S.

ALWAYS determine the domain of any function under consideration.
It's not likely that you'd get this specific function on an exam and be asked to find its x-intercepts.
And I trust that you understand why there's no y-intercept.
 
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12/02/16

Alex C.

Thanks again Kenneth! 
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12/03/16

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