Write the equation in terms of a rotated x'y'-system using ?, the angle of rotation. Write the equation involving x' and y' in standard form.x2 + 2xy + y2 - 8x + 8y = 0; ? = 45°
A. 3x'2 - 4
x'y' + y'2 = 0
B. x'2 = -4
y'2
C. x'2 = -4
y'
D. 2x'2 - 
x'y' + 2y'2 = 0
Answer: C
Mathematics
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