JEE MAIN - Mathematics Bengali (2022 - 24th June Evening Shift - No. 1)
যদি $$x * y = {x^2} + {y^3}$$ এবং $$\left( {x * 1} \right) * 1 = x * \left( {1 * 1} \right)$$ হয় তবে $$2{\sin ^{ - 1}}\left( {{{{x^4} + {x^2} - 2} \over {{x^4} + {x^2} + 2}}} \right)$$ - এর মান হবে
$${\pi \over 4}$$
$${\pi \over 3 }$$
$${\pi \over 2}$$
$${\pi \over 6}$$
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