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Let’s check out your problem:
Let
f
(
x
)
=
x
f(x)=\sqrt{x}
f
(
x
)
=
x
.
\newline
f
′
(
x
)
=
f^{\prime}(x)=
f
′
(
x
)
=
View step-by-step help
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Math Problems
Precalculus
Find trigonometric ratios using multiple identities
Full solution
Q.
Let
f
(
x
)
=
x
f(x)=\sqrt{x}
f
(
x
)
=
x
.
\newline
f
′
(
x
)
=
f^{\prime}(x)=
f
′
(
x
)
=
Recall Power Rule:
Recall the power rule for differentiation, which states that if
f
(
x
)
=
x
n
f(x) = x^n
f
(
x
)
=
x
n
, then
f
′
(
x
)
=
n
⋅
x
(
n
−
1
)
f'(x) = n \cdot x^{(n-1)}
f
′
(
x
)
=
n
⋅
x
(
n
−
1
)
.
Rewrite in Exponent Form:
Rewrite the
square root
function in exponent form:
f
(
x
)
=
x
1
2
f(x) = x^{\frac{1}{2}}
f
(
x
)
=
x
2
1
.
Apply Power Rule:
Apply the power rule to differentiate
f
(
x
)
=
x
1
2
f(x) = x^{\frac{1}{2}}
f
(
x
)
=
x
2
1
. This gives us
f
′
(
x
)
=
(
1
2
)
⋅
x
(
1
2
−
1
)
f'(x) = \left(\frac{1}{2}\right)\cdot x^{\left(\frac{1}{2}-1\right)}
f
′
(
x
)
=
(
2
1
)
⋅
x
(
2
1
−
1
)
.
Simplify Exponent:
Simplify the exponent in the derivative:
f
′
(
x
)
=
(
1
2
)
⋅
x
(
−
1
2
)
f'(x) = (\frac{1}{2})\cdot x^{(-\frac{1}{2})}
f
′
(
x
)
=
(
2
1
)
⋅
x
(
−
2
1
)
.
Rewrite in Radical Form:
Rewrite the derivative in radical form to avoid
negative exponents
:
f
′
(
x
)
=
1
2
⋅
1
x
f'(x) = \frac{1}{2}\cdot\frac{1}{\sqrt{x}}
f
′
(
x
)
=
2
1
⋅
x
1
.
Combine Constants:
Combine the constants and the radical to get the final simplified form of the derivative:
f
′
(
x
)
=
1
2
x
f'(x) = \frac{1}{2\sqrt{x}}
f
′
(
x
)
=
2
x
1
.
More problems from Find trigonometric ratios using multiple identities
Question
If
cos
(
θ
)
=
8
17
\cos(\theta)=\frac{8}{17}
cos
(
θ
)
=
17
8
and
0
∘
<
θ
<
9
0
∘
0^\circ<\theta<90^\circ
0
∘
<
θ
<
9
0
∘
, what is
sec
(
θ
)
\sec(\theta)
sec
(
θ
)
? Write your answer in simplified, rationalized form.
sec
(
θ
)
=
\sec(\theta)=
sec
(
θ
)
=
______
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Posted 9 months ago
Question
cos
(
x
)
=
−
0.3
\cos(x) = -0.3
cos
(
x
)
=
−
0.3
. What is
sin
(
9
0
∘
−
x
)
\sin(90^\circ - x)
sin
(
9
0
∘
−
x
)
? ____
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Posted 1 year ago
Question
If
csc
(
θ
)
=
17
8
\csc(\theta) = \frac{17}{8}
csc
(
θ
)
=
8
17
and
0
∘
<
θ
<
9
0
∘
0^\circ < \theta < 90^\circ
0
∘
<
θ
<
9
0
∘
, what is
tan
(
θ
)
\tan(\theta)
tan
(
θ
)
?
\newline
Write your answer in simplified, rationalized form.
\newline
tan
(
θ
)
=
\tan(\theta) =
tan
(
θ
)
=
______
\newline
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Posted 1 year ago
Question
Is the sine function even or odd?
\newline
Choices:
\newline
[A]even
\text{[A]even}
[A]even
\newline
[B]odd
\text{[B]odd}
[B]odd
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Posted 1 year ago
Question
Write the sentence as an equation.
\newline
89
89
89
is equal to the quotient of
y
y
y
and
17
17
17
\newline
Type a slash (
/
/
/
) if you want to use a division sign.
\newline
_____
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Posted 1 year ago
Question
Write the sentence as an equation.
\newline
45
45
45
is equal to the quotient of
z
z
z
and
5
5
5
\newline
Type a slash (
/
/
/
) if you want to use a division sign.
\newline
_____
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Posted 1 year ago
Question
Solve for
h
h
h
.
\newline
h
2
+
24
h
=
0
h^2 + 24h = 0
h
2
+
24
h
=
0
\newline
Write each solution as an integer, proper fraction, or improper fraction in simplest form. If there are multiple solutions, separate them with commas.
\newline
h
=
h =
h
=
_____
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Posted 1 year ago
Question
h
2
−
4
h
=
0
h^2 - 4h = 0
h
2
−
4
h
=
0
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Posted 1 year ago
Question
Combine the like terms to create an equivalent expression:
\newline
−
k
−
(
−
8
k
)
=
□
-k-(-8k)=\square
−
k
−
(
−
8
k
)
=
□
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Posted 1 year ago
Question
Which of the following degree measures is equal to
5
π
5 \pi
5
π
radians?
\newline
(The number of degrees of arc in a circle is
360
360
360
. The number of radians of arc in a circle is
2
π
2 \pi
2
π
.)
\newline
Choose
1
1
1
answer:
\newline
(A)
14
4
∘
144^{\circ}
14
4
∘
\newline
(B)
90
0
∘
900^{\circ}
90
0
∘
\newline
(C)
1
,
08
0
∘
1,080^{\circ}
1
,
08
0
∘
\newline
(D)
1
,
80
0
∘
1,800^{\circ}
1
,
80
0
∘
Get tutor help
Posted 1 year ago
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