Conjecture Consider the functions f ( x ) = x 2 and g ( x ) = x 3 . (a) Graph f and f' on the same set of axes. (b) Graph g and g' on the same set of axes. (c) Identify a pattern between f and g and their respective derivatives. Use the pattern to make a conjecture about h' ( x ) if h ( x ) = x n . where " is an integer and n ≥ 2 ? (d) Find f' ( x ) if f ( x ) = x 4 Compare the result will) the conjecture in part (c). Is this a proof of your conjecture? Explain.
Conjecture Consider the functions f ( x ) = x 2 and g ( x ) = x 3 . (a) Graph f and f' on the same set of axes. (b) Graph g and g' on the same set of axes. (c) Identify a pattern between f and g and their respective derivatives. Use the pattern to make a conjecture about h' ( x ) if h ( x ) = x n . where " is an integer and n ≥ 2 ? (d) Find f' ( x ) if f ( x ) = x 4 Compare the result will) the conjecture in part (c). Is this a proof of your conjecture? Explain.
Solution Summary: The author explains that the graph of the functions is differentiable for all values of x where n is not an integer.
Conjecture Consider the functions
f
(
x
)
=
x
2
and
g
(
x
)
=
x
3
.
(a) Graph f and f' on the same set of axes.
(b) Graph g and g' on the same set of axes.
(c) Identify a pattern between f and g and their respective derivatives. Use the pattern to make a conjecture about h' (x) if
h
(
x
)
=
x
n
. where " is an integer and
n
≥
2
?
(d) Find f'(x) if
f
(
x
)
=
x
4
Compare the result will) the conjecture in part (c). Is this a proof of your conjecture? Explain.
16. Solve each of the following equations for x.
(a) 42x+1 = 64
(b) 27-3815
(c) 92. 27² = 3-1
(d) log x + log(x - 21) = 2
(e) 3 = 14
(f) 2x+1 = 51-2x
11. Find the composition fog and gof for the following functions.
2
(a) f(x) = 2x+5, g(x) = x²
2
(b) f(x) = x²+x, g(x) = √√x
1
(c) f(x) = -1/2)
9
9(x) =
х
=
-
X
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