Let f(x) = 9cosx.
Complete parts (a) through (g) below.
(a) What is the y-intercept of the graph of f?
(Simplify your answer. Type an integer or a decimal.)
(b) For what numbers x, -π ≤ x ≤ π, is the graph of f increasing?
π fx, -2π ≤ x ≤ 2π f(x) = 9π f(x) = 9f(x) = -9f(x) = 9x = π f(x) = -9x = π f(x) = -(9)/(2)π x{(x|x|=((2k-1)π)/(2)),(k):}
Let fx = 9cos
Complete parts (a) through (g) below.
(a) What is the y-intercept of the graph of f?
(Simplify your answer. Type an integer or a decimal.)
(b) For what numbers, -x ≤ x, is the graph of f increasing? <x< Type exact answers in terms of x. Use integers or fractions for any numbers in the expressions. Simplify your answers.) (c) What is the absolute minimum value of f?
dFor what numbers X, -2x ≤ x ≤ 2x, does f(x) = 9
(Use a comma to separate answers as needed. Type an exact answer in terms of . Use integers or fractions for any numbers in the expression. Simplify your answer.) eFor what numbers x, -2 < x < 2, does f(x) = 9 Where does f(x) = -9 f(x) = 9 for x = Use a comma to separate answers as needed. Type an exact answer in terms of . Use integers or fractions for any numbers in the expression. Simplify your answer.) f(x = -9 for x = Use a comma to separate answers as needed. Type an exact answer in terms of . Use integers or fractions for any numbers in the expression. Simplify your answer.
fFor what numbers x, -2 < x < 2x, does f(x) = -
(Use a comma to separate answers as needed. Type an exact answer in terms of . Use integers or fractions for any numbers in the expression. Simplify your answer.) g) What are the x-intercepts of f? Choose the correct answer below.
OA.
OB. {x|x=2k,k is an integer} Oc, {x|x=kn,k is an integer}
