UP PGT mathematics previous years question paper

Question : Find solution of the following UP PGT mathematics previous years question paperSolution :First we shall check whether f is One -One \[f\left(x_1\right)=f\left(x_2\right)\] \[x_1^2\ =x_2^2\] \[x_1^2-x_2^2=0\] \[\left(x_1-x_2\right)\left(x_1+x_2\right)=0\] \[x_1=x_2,\ -x_2\] That is f(x) is not one one. Now we shall…

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