Find the center of mass of a triangular sheet whose vertices are (8, 0), (2, 6) and (2, 0), whose density function is
p (x, y) = x + y + 1Integral sech √x tanh √x/√x dx
f(x)=(3x^(3)+5)*e^(2x^(2))
Evaluate the double integral by polar coordinates. Integral D 8- 2x² - 2y²dA,