Try another version of this question Which of the following represents the equation of `-2x^2+8xy+1=0` when rotated through `theta = 45^@`? `3(x')^2+2x'y'-5(y')^2+1=0` `3(x')^2+2x'y'+5(y')^2+1=0` `3(x')^2+2x'y'-5(y')^2-1=0` `3(x')^2-2x'y'-5(y')^2+1=0` Box 1: Select the best answer `3(x')^2+2x'y'-5(y')^2+1=0`
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Box 1: Select the best answer