Use the Fourier transform to solve the IBVP Ut=a^2(Uxx+Uyy), 0 U(x, y,0)=f(x, y)
U(0,y, t)= U(x,0,t)=0

Awall map has a scale of 128 miles = 6 inches. the distance between springfield and lakeview is 2 feet on the map. what is the actual distance between springfield and lakeview? 384 miles 512 miles 1.13 miles 42.7 miles

The focus of parabola is (-4, -5), and its directrix is y= -1. fill in the missing terms and signs in parabolas equation in standard form

Abcd is a square. what is the measure of angle bac