Solved

Use Axis of Rotation Formulas for X and Y to Transform

Question 119

Multiple Choice

Use axis of rotation formulas for x and y to transform the quadratic equation to an equation in (u, v) coordinates with no
cross-product term.
- x2+2xy+y2+42x42y=0x ^ { 2 } + 2 x y + y ^ { 2 } + 4 \sqrt { 2 } x - 4 \sqrt { 2 } y = 0


A) 3u28+v28=1\frac { 3 u ^ { 2 } } { 8 } + \frac { v ^ { 2 } } { 8 } = 1
B) v=u24\mathrm { v } = \frac { \mathrm { u } 2 } { 4 }
C) u24+3v24=1\frac { \mathrm { u } ^ { 2 } } { 4 } + \frac { 3 \mathrm { v } ^ { 2 } } { 4 } = 1
D) 4u=v24 u = v ^ { 2 }

Correct Answer:

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