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ZeHanz
 2 years ago
What is the exact length of the graph of y = x², between (0, 0) and (2, 4). I know I have to integrate sqrt(1+4x²) from 0 to 2, but I have forgotten how to do this. I remember there was a trigonometric substitution...
ZeHanz
 2 years ago
What is the exact length of the graph of y = x², between (0, 0) and (2, 4). I know I have to integrate sqrt(1+4x²) from 0 to 2, but I have forgotten how to do this. I remember there was a trigonometric substitution...

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sniping6267
 2 years ago
Best ResponseYou've already chosen the best response.0dw:1354226775912:dw

ZeHanz
 2 years ago
Best ResponseYou've already chosen the best response.0Thank you, but I'm not looking for the area under the graph! I want to know the *length* of it.

robtobey
 2 years ago
Best ResponseYou've already chosen the best response.1Refer to the attachment.

ZeHanz
 2 years ago
Best ResponseYou've already chosen the best response.0Thanks! I had already tried Wolframalpha myself, but couldn't get the "step by step" solution. The integral is indeed rather complicated...
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