Question

How and can graph and do these quetions
y=2+sin(x+π/4)
and
y=cos (x-π/3)

Answer 1

the centre of the graph has been moved from y = 0 to y = 2

so the max value becomes 3 and the min value is 1

adding pi/4 means that the graph starts pi/4 to the left of x = 0


the start of the graph is shown below