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Identify which of the following are examples of y as function of x, and give a...

Identify which of the following are examples of y as function of x, and give a brief explanation either analytically or graphically. For those that are not functions, provide a specific value of x where two (or more) values of y can be assigned.

a) 3x2-y=5

b) x2+y2=4

c) y=5e-3x

d) x=square root y-1

e) sin y=x

Math   Calculus   
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