Friday

April 18, 2014

April 18, 2014

Posted by **Liz** on Wednesday, December 19, 2012 at 5:36pm.

- calc arc length -
**Count Iblis**, Wednesday, December 19, 2012 at 7:11pmYou need to integrate sqrt[1+f'(x)^2] from x = 0 to pi/3. Computing the derivative of f(x) is not difficult, you can use the chain rule, substitute u = x^3 for the upper limit and use that the derivative w.r.t. x is the derivative w.r.t u times the derivative of of u w.r.t. x. The derivative w.r.t. u is, by the Fundamental Theorem of Calculus, equal to sqrt[cos(u)].

**Related Questions**

multivariable calc - Please help! Find the point where the curve r(t) = (12sint)...

Math rem - 2.Find the length of the arc in a circle if the radius of the circle ...

calculus - Find the length of the arc formed by y = (1/8)(4x^2-2ln(x)) from x=4 ...

Geometry - What is the radius if: degree of measurement of arc=30 length=1/3xy(...

Calculus - A pendulum swings through an arc length of 1120 cm (Swing #1). With ...

math - Whats the difference between an arc [of a circle]'s length and measure? ...

Calculus Hard Question - A pendulum swings through an arc length of 1120 cm (...

maths - find the radius of the circle if length of arc is 4p cm and angle made ...

precalculus - The question is...find the radian measure of the central angle of ...

Trig - Find the radian measure of the central angle of a circle of radius r that...