Let

when

my book gave me this without any further explanation. how do we get 'when '??

could be something simple that i overlooked >.< please help

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- Dec 21st 2012, 10:21 PMmuddywaterslimit of function - please explain
Let

when

my book gave me this without any further explanation. how do we get 'when '??

could be something simple that i overlooked >.< please help - Dec 21st 2012, 10:28 PMchiroRe: limit of function - please explain
Hey muddywaters.

The short answer is that the square root term approaches infinity and since a <= 0 we have a situation where - (-x) = +x which means -ax > 0 which leaves infinity + infinity - constant = infinity.

What you may want to do however is use L'hopitals rule: have you used this before? - Dec 22nd 2012, 04:53 AMmuddywatersRe: limit of function - please explain
thanks. no i have not learned that yet. maybe in a coming topic.just to confirm - every square root term that has x will surely approach infinity as x approaches infinity right?

- Dec 22nd 2012, 09:01 AMhollywoodRe: limit of function - please explain
What you said is too general. Let's say if some function goes to infinity as x goes to infinity, then also goes to infinity as x goes to infinity.

- Hollywood