JEE MAIN - Mathematics Hindi (2022 - 28th June Evening Shift - No. 23)
यदि $$\mathop {\lim }\limits_{x \to 1} {{\sin (3{x^2} - 4x + 1) - {x^2} + 1} \over {2{x^3} - 7{x^2} + ax + b}} = - 2$$ है, तो $$(a-b)$$ का मान बराबर है ___________.
Answer
11
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