Quick 2 calculus problem

[vocal horizon]

I currently have multiple exams today and I have these two remaining assignment that has a deadline today and I can't spend my time on it, I appreciate it if somebody could help. Will come back later going to take exam thank you o7

[crude adder]

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[outer yoke]

The double integral seems straightforward

[vocal horizon]

Yeah i got the double integral its done

i still dont have number 1 tho

[outer yoke]

The curvature of the graph of $f$ at $(x,f(x))$ is $$\frac{|f''(x)|}{(1+[f'(x)]^2)^{\frac{3}{2}}}$$

[drifting saddle]

Rafain | #WhoIsWolf

[outer yoke]

and the curvature of a circle of radius $r$ is $\frac{1}{r}$

[drifting saddle]

Rafain | #WhoIsWolf

[vocal horizon]

Thanks

+close