exam Maths Puzzle Numerical Ability

Could you help me with this problem?

What is the period and graph of y=2 cot(x+ pie over 2)?

Thank you very much for your help!

Sarah McGuire

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exam Other Question

what are the three types of linear systems identify the exponential function of the form f(x)=a(2^x)+b whose graph is shown in figure.

info:

2 points on graph (0,-2), (2,1)
y=-3