if x has only one image so f can be called as a

if x doesn't have an image so f can be called as a

the equation of the ball represents a

|x| < a ⇔ -a < x < a

|x| > a ⇔ x < -a or x > a

f(x) = 3 represents

linear function's degree can be

constant function's degree can be

y = x^2 + 1
y is called

y = x^2 + 1
x is called

(f+g)(x) = f(x) + g(x) = h(x)
Domain of h(x) =

(f.g)(x) = f(x) . g(x) = h(x)
Domain of h(x) =

(f-g)(x) = f(x) - g(x) = h(x)
Domain of h(x) =

(f/g)(x) = f(x) / g(x) = h(x)
Domain of h(x) =

we say that the function is one to one when we prove that

a/b < c/d is equal to ad < cb

a/b = c/d is equal to ad = cb

we say that the function isn't one to one when we prove that

we say that the function is one to one when we prove that