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3 years ago

Plzz solve this easy calculus :')

Mathematics

1 answer:

Digiron [165]3 years ago

3 0

Answer:

$\sin \: x - \cos x \: + c$

Step-by-step explanation:

$\int \frac{cos2x}{ \sqrt{1 - sin2x} } dx \\ \\ = \int \frac{ {cos}^{2}x - {sin}^{2}x } { \sqrt{ {sin}^{2}x + {cos}^{2}x - 2sinx \: cosx } } dx \\ \\ = \int \frac{ ({cos}x - {sin}x )({cos}x + {sin}x )} { \sqrt{ {({cos}x - {sin}x )}^{2} } } dx \\ \\ = \int \frac{ ({cos}x - {sin}x )({cos}x + {sin}x )} {{ {({cos}x - {sin}x )} } } dx \\ \\ = \int({cos}x + {sin}x)dx \\ \\ = \int{cos}x \: dx + \int{sin}x \: dx \\ \\ = \sin \: x - \cos x \: + c$

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Gennadij [26K]

Answer:

elsa's interval width will be greater than that of frank

Step-by-step explanation:

first of all we are told that both Elsa and Frank have the same sample proportion so their midpoint is also going to be the same.

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3 years ago

Help me with this math problem looka t the picture

Kaylis [27]

Answer:

A is correct. This line has a negative slope meaning B and D are incorect.

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Step-by-step explanation:

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3 years ago

Read 2 more answers

1. A senator is thinking about running for president. But she will only do so if more than 60% of the voters view her favorably.

OLga [1]

The senator is faced with the making a decision to run for President, based

on the conclusion she can make from the data she gathers.

The statistical method that would be best for her to use is inferential

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given confidence level.

Reason:

The two main types of statistical methods are;

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Descriptive statistics methods; Theses are statistical method used as a

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Given that the senator is trying to draw conclusion based on the data she

gathers, she should use inferential statistic method.

The type inferential statistic method that can be used is the confidence

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From the data collected, the proportion of voters that view her favorably is

used at a given confidence level to determine the true proportion of voters

that view her favorably.

Therefore;

The statistical method that would be best for her to use is the

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Learn more here:

brainly.com/question/15873157

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3 years ago

Divide 30 by half and add 12. What do you get?

topjm [15]

Answer:

Step-by-step explanation:

30/2=15 +12=27

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3 years ago

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First we have to divede the tota of students into the sice of each grop so:

$\frac{442}{24}=18.4$

So we can aproximate this to a whole number so:

$\frac{450}{25}=18$

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1 year ago