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Most Important Selected Qs for JEE AdvancedMathematicsInverse Trigonometric Functions

Let f(x)= ⁻¹( x-2 2 x) and _ r=1 ^5 f(r)=a-b where a, b N , then the value of b is

Correct answer

5

Step-by-step solution

aligned & f(x)= ⁻¹( x) & _ r=1 ^5 f(r)=f(1)+f(2)+f(3)+f(4)+f(5)=1+2- +3- +4- +5-2 =15-5 & a=15, b=5 aligned

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