The number of values of x lying in the interval (- , ) which satisfy the equation 8^ (1+| x|+ ^2x+| ^3x|+ ) =4^3 is

JEE Main Mathematics question

Not in JEE Main syllabus

The number of values of lying in the interval which satisfy the equation is

Answer: (B)

The exponent is an infinite GP with first term 1 and ratio , so it sums to . The equation becomes \frac{3}\cos$

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

Question ID VK-008139