. If the straight-line
y = mx + c (m > 0) touches the parabola y2 = 8(x + 2), then the minimum value taken by c is
A. 12
B. 8
C. 4
D. 6
Best Answer
Ans: C
Sol: The tangent of slope m must be of the form y = m (x + 2) + a/m
Related questions
y = mx + c (m > 0) touches the parabola y2 = 8(x + 2), then the minimum value taken by c is
A. 12
B. 8
C. 4
D. 6
Ans: C
Sol: The tangent of slope m must be of the form y = m (x + 2) + a/m
