The equations of the transformed graphs are [tex]y = \tan(\frac{\pi}{4}x) + 3[/tex] and [tex]y = -\frac34\sin(2x)[/tex]
How to transform the functions?
The tangent function
The parent function is:
y = Atan(Bx) + k
It has a period of 4.
So, we have:
[tex]\frac{\pi}{B} = 4[/tex]
Make B the subject
[tex]B = \frac{\pi}{4}[/tex]
It is shifted vertically up by 3 units.
So, we have:
k = 3
Substitute these values in y = Atan(Bx) + k and remove A
[tex]y = \tan(\frac{\pi}{4}x) + 3[/tex]
Hence, the equation of the transformed graph is [tex]y = \tan(\frac{\pi}{4}x) + 3[/tex]
The sine function
The parent function is:
y = Asin(Bx) + k
It has a period of [tex]\pi[/tex]
So, we have:
[tex]\frac{2\pi}{B} = \pi[/tex]
Make B the subject
B = 2
It has an amplitude of 3/4
So, we have:
A = 3/4
It is flipped across the x-axis
So, we have:
A = -3/4
Substitute these values in y = Asin(Bx) + k and remove k
[tex]y = -\frac34\sin(2x)[/tex]
Hence, the equation of the transformed graph is [tex]y = -\frac34\sin(2x)[/tex]
Read more about function transformation at:
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