I don't get how y end up equal to 4/rad3

Calculus For The Life Sciences
2nd Edition
ISBN:9780321964038
Author:GREENWELL, Raymond N., RITCHEY, Nathan P., Lial, Margaret L.
Publisher:GREENWELL, Raymond N., RITCHEY, Nathan P., Lial, Margaret L.
Chapter4: Calculating The Derivative
Section4.2: Derivatives Of Products And Quotients
Problem 35E
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I don't get how y end up equal to 4/rad3

(c) Determine the intervals on which y = f(r) is concave up and the intervals on which it is concave
down. Identify all inflection points.
-3/2
+ "(x) = - = x - ³/₂
(3,00)
| (0,7)
+
f"
I leup
c.down
+
√/₂2 = - + x²-√²/² (x-3)
X
4
+"(x)=0
at x = 3
x
4
5
(3, 1/72) reflection jet,
Transcribed Image Text:(c) Determine the intervals on which y = f(r) is concave up and the intervals on which it is concave down. Identify all inflection points. -3/2 + "(x) = - = x - ³/₂ (3,00) | (0,7) + f" I leup c.down + √/₂2 = - + x²-√²/² (x-3) X 4 +"(x)=0 at x = 3 x 4 5 (3, 1/72) reflection jet,
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