Answer not matching: g(t) = 1/(1 - t) + sqrt[1 + t] - 3.1

Abhishekdas

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Mar 9, 2014
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Screen Shot 2018-07-21 at 8.11.34 PM.png (-1,1) Show that the function has only one zero in the given interval. I have tried the following steps
image1.jpg

Thus, F' is becoming zero at 1.58 which means that it has two real roots. But, this can't be possible according the question.
 
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