Saturday

August 30, 2014

August 30, 2014

Posted by **Max** on Friday, November 8, 2013 at 7:36pm.

dr/dt=7cos(pi(t)), r(1/4)=14

r(t)=?

- Calculus-Antiderivative -
**Steve**, Saturday, November 9, 2013 at 12:23amdr/dt = 7cos πt

r = 7/π sin πt + c

14 = 7/π sin π/4 + c

14 = 7/(π√2) + c

c = 14 - 7/(π√2)

r = 7/π sin πt + 14 - 7/(π√2)

**Related Questions**

Calculus - I have several problems that I don't know how to do. I will post one ...

trig - For the following expression, find the value of y that corresponds to ...

Math - Calculus - Im trying to understand related rates here and im getting ...

Pre-Calculus - As a balloon in the shape of a sphere is being blown up, the ...

calculus - c)The price (in dollars) p and the quantity demanded q are related by...

Calculus AP - Evaluate the integral interval from [0 to pi] t sin(3t)dt Use ...

calculus - solve the initial value problem by seperation of variables du/dt=2t+...

calculus - solve the initial value problem by seperation of variables du/dt=2t+...

CALCULUS - Using the separation of variables technique, solve the following ...

Calculus - Solve the following initial value problem explicitly: y'= ye^-x , y(0...