JEE Main 202228 Jun, Evening shiftMathematicsMediumLimit, Continuity and Differentiability420× since 2002If limx→1sin(3x2−4x+1)−x2+12x3−7x2+ax+b=−2\mathop {\lim }\limits_{x \to 1} {{\sin (3{x^2} - 4x + 1) - {x^2} + 1} \over {2{x^3} - 7{x^2} + ax + b}} = - 2x→1lim2x3−7x2+ax+bsin(3x2−4x+1)−x2+1=−2, then the value of (a −-− b) is equal to ___________.Your answerType your answer. Integers and decimals are accepted.CheckSkip · show solution
