Consider the parametric equation
x=4(coshttp://webwork.umemat.maine.edu/webw...144/char12.png+http://webwork.umemat.maine.edu/webw...144/char12.pngsinhttp://webwork.umemat.maine.edu/webw...144/char12.png)
y=4(sinhttp://webwork.umemat.maine.edu/webw...144/char12.png–http://webwork.umemat.maine.edu/webw...144/char12.pngcoshttp://webwork.umemat.maine.edu/webw...144/char12.png)
What is the length of the curve for http://webwork.umemat.maine.edu/webw...144/char12.png=0 to http://webwork.umemat.maine.edu/webw...144/char12.png=9pi/10
the formula i believe is
L=integral from t0 to t1 sqrt((dx/dt)^2+(dy/dt)^2)dt
ive tried pluggin in the derivatives of of x and y for dx dt and integrating from 0 to 9pi/10 but its not working
