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Question

Match the graphs to the correct function.
f(x)=cosx,g(x)=f(−x),h(x)=−f(x),
u(x)=−g(x)+3,v(x)=3h(x+5)

A
u(x)=g(x)+3
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B
v(x)=3h(x)+5
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C
h(x)=f(x)
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Solution

The graph of f(x)=cosx
The graph of g(x)=f(x) is the graph of f(x) flipped over the y-axis,
We observe that g(x)=f(x)
The graph of h(x)=f(x) is the graph of f(x) flipped over the x-axis,
Graph of u(x) is the graph of g(x)+3 which is the same as graph of f(x)+3 which is further same as the graph of h(x)+3. So we shift h(x) upwards by 3 units
Graph of v(x) is the graph of h(x) stretched along the y-axis by 3 units and shifted upwards by 5 units



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