JEE Main 2019 Mathematics question
The equation of common tangent to the curves and xy = −4, is:
Answer: (A)
Solution
y = mx + 4/m meets xy = −4 tangentially when ⇒ m = 1.
The equation of common tangent to the curves and xy = −4, is:
y = mx + 4/m meets xy = −4 tangentially when ⇒ m = 1.