SOLUTION: Can someone help me solve the following limit? I know im in the wrong section... lim 2x^2-9x+2 x->3 Thank you.

Algebra ->  Inequalities -> SOLUTION: Can someone help me solve the following limit? I know im in the wrong section... lim 2x^2-9x+2 x->3 Thank you.       Log On


   

Question 436767: Can someone help me solve the following limit? I know im in the wrong section...
lim 2x^2-9x+2
x->3
Thank you.
Answer by richard1234(7193) About Me  (Show Source):
You can put this solution on YOUR website!
Note that polynomials are continuous everywhere, so

lim%28x-%3Ec%2C+f%28x%29%29+=+f%28c%29

Here, lim%28x-%3E3%2C+2x%5E2+-+9x+%2B+2%29+=+2%283%5E2%29+-+9%283%29+%2B+2+=+-7.

It appears there was some discrepancy about whether it was 3 or -7, hence your message...unless you typoed in the problem, I'm positive the limit is -7. Even Wolfram Alpha says it's -7.
http://www.wolframalpha.com/input/?i=limit+as+x+goes+to+3+of+2x^2+-+9x+%2B+2