If the line 2x + y + k = 0 is normal to the parabola y^2 = -8 x , then the value of k will be
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heya!!!
Slope of normal × Slope of tangent = -1
Slope of normal = -2
Slope of tangent to the parabola is = -4/y
4/y × -2 = -1
y = 8. and x = -8
2 ( -8 ) + 8 + k = 0
k = 8
Have a nice time.
Slope of normal × Slope of tangent = -1
Slope of normal = -2
Slope of tangent to the parabola is = -4/y
4/y × -2 = -1
y = 8. and x = -8
2 ( -8 ) + 8 + k = 0
k = 8
Have a nice time.
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