3. Find the curvature of the following: Give exact values only a) 7(1)=(21, 1, 1). b)...

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3. Find the curvature of the following: Give exact values only a) 7(1)=(21, 1², 1²). b) at f(x)=sin'x, at x= R|N 1=1 4. Given the vector function r(t) = (cos 21, sin 2t, t) find 3. Find the curvature of the following: Give exact values only a) 7(1)=(21, 1², 1²). b) at f(x)=sin'x, at x= R|N 1=1 4. Given the vector function r(t) = (cos 21, sin 2t, t) find