Consider a general quadratic function of two variables: q(x, y) = ax2 + by2 + cxy + dx + ey + f where a – f are constants. using the fundamental definition, show that at every point hx0, y0i such a function is everywhere differentiable

If the wwight of a package is multiplied by 7/10 the result is 65.8 find the weight of the package

Since opening night, attendance at play a has increased steadily, while attendance at play b first rose and then fell. equations modeling the daily attendance y at each play are shown below, where x is the number of days since opening night. on what day(s) was the attendance the same at both plays? what was the attendance? play a: y = 8x + 191 play b: y = -x^2 + 26x + 126

Find the midpoint m of z1=(8+5i) and z2=(12+3i)