Question

Find the maximum and minimum value of $y=1+2sinx$ respectively.

• A. $3,-1$
• B. $1,-3$
• C. $-1,-3$
• D. $-3,-1$

Answer 1

The correct option is A $3,-1$

Maximum value of $sinx=1$
Therefore maximum value of $y$ is $y=1+2\left(1\right)=3$
Minimum value of $sinx=-1$
Therefore minimum value of $y$ is $y=1+2(-1)=-1$