Sorry I get
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Hello everyone. Much to my chagrin, I am having an algebraic problem. Here is the question:
Question:
Find the length of the curve analytically by anti-differentiation. You will need to simplify the integrand algebraically before finding an anti-derivative.
Solution:
I understand everything up to this point. In the answer, this is what it does after the prior step:
What happened to the 1? What happened to the negative sign? Any help is appreciated. Thanks in advance.