Cho bài toán quy hoạch tuyến tính sau:
f(x)= x1 +2x2 +x3 +3x4 - 2x5 ---> max

If cos(2x) = tan^2(y), show that cos(2y) = tan^2(x).

Line wx is parallel to line yz. if m

Astudent draws two parabolas both parabolas cross the x axis at (-4,0) and (6,0) the y intercept of the first parabolas is (0,-12). the y intercept of the second parabola is (0,-24) what is the positive difference between the a values for the two functions that describe the parabolas