
Grade 11IIT JEE Entrance Exam
The normal chprd of parabola y^2=4ax at (x1,x1) subtends a right angle at-


Let S={x:x belongs to R(√3+√2)^(x^2-4) - (√3-√2)^(x^2-4)=10}. Then n(S) is equal to-
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