= a^2+b^2 a^2-b^2 , where a,b R, gives real values of if and only if

JEE Main Mathematics question

Not in JEE Main syllabus

, where , gives real values of if and only if

Answer: (B)

A secant value is admissible exactly when its absolute value is at least 1. Here holds automatically,

Create a free account to read the complete working, and practise questions like this in a timed test.

Question ID VK-008366