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If f''(x)+f'(x)+f^(2)(x)=x^(2) is the di...

If `f''(x)+f'(x)+f^(2)(x)=x^(2)` is the differential equation of a curve and let P be the point of maxima, then number of tangents which can be drawn from P to
`x^(2)-y^(2)=a^(2)` is/are

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