The number of the real roots of the equation $2 \cos (x(x + 1)) … | CAT 2019 Question Paper Slot 1

CAT 2019 · Slot 1Quantitative AbilityFunctions, Graphs and StatisticsMEDIUM+3 / −1

The number of the real roots of the equation $2 \cos (x(x + 1)) = 2^x + 2^{-x}$ is

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Attempt CAT 2019 Question Paper Slot 1 with real exam interface and instant grading.

CAT 2019 · Slot 1Quantitative AbilityFunctions, Graphs and StatisticsMEDIUM+3 / −1

The number of the real roots of the equation $2 \cos (x(x + 1)) = 2^x + 2^{-x}$ is

Select an option to reveal the answer and explanation

Practice the full paper

Attempt CAT 2019 Question Paper Slot 1 with real exam interface and instant grading.