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The equation to a straight line referred...

The equation to a straight line referred to axes inclined at ` 30^(@)` to one another is y = 2 x + 1 . Find its equation referred to axes inclined at `45^(@)` , the origin and axis of x being unchanged

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The correct Answer is:
`2 x' - sqrt"" 6y' + 1= 0`
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