It's all here: http://i39.tinypic.com/fp9mr7.jpg
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Originally Posted by janedoe It's all here: http://i39.tinypic.com/fp9mr7.jpg They multiplied by 1/2 and divided by 1/2. In the last step they used the fact that goes to 1 and x goes to 0.
Originally Posted by apcalculus They multiplied by 1/2 and divided by 1/2. In the last step they used the fact that goes to 1 and x goes to 0. I'm sorry, I'm still not getting it =[ You mean, multiply the whole thing by 1/2, and then divide vy half as in, multiply by 2/1 ?
Originally Posted by janedoe I'm sorry, I'm still not getting it =[ You mean, multiply the whole thing by 1/2, and then divide vy half as in, multiply by 2/1 ? If you have a fraction like , it is the same as Now split into a product of fractions and write the 0.5 and , to get: Note that is 2 and can be pulled in front of the limit sign since it is a constant. That's all we're doing. I hope this helps.
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