find radius of curvature and an equation for the circle of curvature of the curve r(t)= ti+sintj at the point(pi/2,1)
2x+2y/3=26, 3x-5y/6=6
x/2+y/5=5, y/2-x/3=3
3x+y=22, 6x-3y=9
45+34444=
b=2.5+a
8.2a+11.2b-5c=-10
9.7c-5b=10
if 3,400 acasia tree are counted on a 5 km x 7 km rectangular patch of land, what is the density of acsia trees per square meter?
4x+y=16, 12x-2y=8
3y-x=7, 4x-7y=2