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Setler [38]
3 years ago
11

True or False?In Exercise,determine whether the statement is true or false given that f(x) = In x.if it is false,explain why or

given an example that shows it is false.
if f(x) < 0, then 0 < x <1.
Mathematics
1 answer:
Kay [80]3 years ago
7 0

Answer:

True

Step-by-step explanation:

This is true. Because ln x is determined that if f(x) = lnx then

e^{f(x)} = x

So if f(x) < 0, negative then

e^{f(x)} = \frac{1}{e^{-f(x)}}

where -f(x) is positive and

e^{-f(x)} \geq 1 and positive

So \frac{1}{e^-f(x)} < 1and positive

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Answer:

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Step-by-step explanation:

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3 years ago
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If cos(θ)=2853 with θin Q IV, what is sin(θ)?
marysya [2.9K]

Answer: \sin \theta=\frac{-45}{53}

Step-by-step explanation:

Since we have given that

\cos\theta=\frac{28}{53}

And we know that θ is in the Fourth Quadrant.

So, Except cosθ and sec θ, all trigonometric ratios will be negative.

As we know the "Trigonometric Identity":

\cos^2\theta+\sin^2\theta=1\\\\\sin \theta=\sqrt{1-\cos^2\theta}\\\\\sin \theta=\sqrt{1-(\frac{28}{53})^2}=\sqrt{\frac{53^2-28^2}{53^2}}\\\\\sin \theta=\sqrt{\frac{2025}{53^2}}\\\\\sin \theta=\frac{45}{53}

It must be negative due to its presence in Fourth quadrant.

Hence, \sin \theta=\frac{-45}{53}

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3 years ago
What is the the value of x? Enter uour answer in the box. 91°, 8x+3°,10x-4°
zzz [600]

Answer:

x = 5 is the right answer.

Step-by-step explanation:

As we know sum of all angles in a triangle is 180°.Therefore in this question we will form an equation.

Sum of all the angles of a triangle = 180

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90 + 18x = 180

18x + 90 - 90 = 180 - 90

18x = 90

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Therefore x = 5 is the right answer.

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Answer:

The answer is 1.2

Step-by-step explanation:

Hope this helps

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Answer:

ii)

Step-by-step explanation:

Find the solution in the given attachement

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