as x approaches positive infinity the square root (in parenthesis) of (x ^2 + ax) minus x Thanks in advance.
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Originally Posted by roflcoptur as x approaches positive infinity the square root (in parenthesis) of (x ^2 + ax) minus x Thanks in advance. Multiply by , simplify the numerator, divide numerator by x and then take the limit. If you need more help, please post your work and say where you get stuck.
Have you learned L'Hospital's rule? We can occasionally rewrite a limit of the form as a limit of the form . In our case, Edit: Or you can use Mr. Fantastic's method, which doesn't require the rule.
I have learned both methods. I understand both of them now. Thanks!
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