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Functions question

2020 · Shift 2 · Q34
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Functions question

2020 · Shift 2 · Q34

JEE AdvancedMathematicsFunctionsNumerical+4 / −1
Let the function f : [0, 1] →\to→ R be defined by f(x)=4x4x+2f(x) = {{{4^x}} \over {{4^x} + 2}}f(x)=4x+24x​ Then the value of f(140)+f(240)+f(340)+...+f(3940)−f(12)f\left( {{1 \over {40}}} \right) + f\left( {{2 \over {40}}} \right) + f\left( {{3 \over {40}}} \right) + ... + f\left( {{{39} \over {40}}} \right) - f\left( {{1 \over 2}} \right)f(401​)+f(402​)+f(403​)+...+f(4039​)−f(21​) is ..........
Numerical answer
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