What are all the numbers of x for which f'(x) < 0 where ƒ(x) = 3x4 + 9? a. x > 1 b. x = 1 x < 0 c. O d. e. O f. no such x exists x = 0 for all real numbers x 9. x < 1 Oh. x > 0

Algebra: Structure And Method, Book 1
(REV)00th Edition
ISBN:9780395977224
Author:Richard G. Brown, Mary P. Dolciani, Robert H. Sorgenfrey, William L. Cole
Publisher:Richard G. Brown, Mary P. Dolciani, Robert H. Sorgenfrey, William L. Cole
Chapter8: Introduction To Functions
Section8.8: Linear And Quadratic Functions
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Hello, can someone please help me with this calculus practice question

What are all the numbers of x for which f'(x) < 0 where ƒ(x) = 3x4 + 9?
a. x > 1
b. x = 1
x < 0
c.
O d.
e.
O f.
no such x exists
x = 0
for all real numbers x
9. x < 1
Oh. x > 0
Transcribed Image Text:What are all the numbers of x for which f'(x) < 0 where ƒ(x) = 3x4 + 9? a. x > 1 b. x = 1 x < 0 c. O d. e. O f. no such x exists x = 0 for all real numbers x 9. x < 1 Oh. x > 0
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