) Rahul was studying at home in the evening. But due to improper power supply he could not study properly. a) Which phenomenon of light enables Rahul to see print in the book?
b) How was Rahul able to read the print on the book? Explain.
c) What is the role of light?

guess at question:

a vertical line intersects the graph of g(x,y) = 0 at two points. what conclusion follows about the function f(x) implicitly defined by g(x,f(x)) = 0?

the domain of f(x) cannot include the x coordinate of any such vertical line.

informally, f(x) is not a function, and

g(x,y)=0 cannot be solved for y uniquely.

the relation r = {(x,y) such that g(x,y) = 0} is a function if

for all (a,b) ∊ r and (c,d) ∊ r, a=c implies b=d.

step-by-step explanation:

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step-by-step explanation:

table a is wierd

step-by-step explanation:

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