MY NOTES ASK YOUR TEACHER The rate of change of the function f(x) = sin(x) + csc(x) is given by the expression cos(x) - csc(x) cot(x). Show that the expression for the rate of change can also be written as -cos(x) cot²(x). cos(x)-csc(x) cot(x) = cos(x) - sin(x) sin(x) = (cos(x)) sin²(x)) -csc²(x)) = (cos(x)) = (-cos(x))([ |-¹)
MY NOTES ASK YOUR TEACHER The rate of change of the function f(x) = sin(x) + csc(x) is given by the expression cos(x) - csc(x) cot(x). Show that the expression for the rate of change can also be written as -cos(x) cot²(x). cos(x)-csc(x) cot(x) = cos(x) - sin(x) sin(x) = (cos(x)) sin²(x)) -csc²(x)) = (cos(x)) = (-cos(x))([ |-¹)
Elementary Algebra
17th Edition
ISBN:9780998625713
Author:Lynn Marecek, MaryAnne Anthony-Smith
Publisher:Lynn Marecek, MaryAnne Anthony-Smith
Chapter8: Rational Expressions And Equations
Section8.9: Use Direct And Inverse Variation
Problem 498E: If y varies inversely with x and y=11 when x=3 find the equation that relates x and y.
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Transcribed Image Text:MY NOTES
ASK YOUR TEACHER
The rate of change of the function f(x) = sin(x) + csc(x) is given by the expression cos(x) - csc(x) cot(x). Show that the expression for the rate of change can also be written as
-cos(x) cot²(x).
cos(x)-csc(x) cot(x) = cos(x) -
1
sin(x)
sin(x)
= (cos(x))(
sin²(x))
- csc²(x))
= (cos(x))(
= (-cos(x))
-1)
= -cos(x) cot²(x)

Transcribed Image Text:Verify the identity.
9 cos² B-9 sin² B = 18 cos² B-9
9 cos² B-9 sin² B = 9 cos² B-9(1- cos²B
= 9 cos² B + 9 cos²B
X
= 18 cos² B-9
X
9
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