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ExtremeBDS [4]
3 years ago
15

It says use cofunction but still i didnt understand

Mathematics
1 answer:
torisob [31]3 years ago
5 0

Answer:

-\frac{\pi }{22\\}

Step-by-step explanation:

\frac{5\pi }{11}-pi/2

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A. Evaluate the polynomial
sdas [7]

Answer:

a) y = x³− 5x² + 6x + 0.55 at x = 1.37.

Use 3-digit arithmetic with chopping. Evaluate the percent relative round-off error.

-1.183%

b. Express y as y = ((x − 5)x + 6)x + 0.55 (this is the same equation). Use again 3-digit arithmetic with chopping. Evaluate the percent relative round-off error and compare with part (a). Make the conclusion about which form of the polynomial is superior.

-0.161%

Comparing part a and b together, part b is more superior because the percent(%) error is smaller when compared to part a

Step-by-step explanation:

a) y = x³− 5x² + 6x + 0.55 at x = 1.37.

Use 3-digit arithmetic with chopping. Evaluate the percent relative round-off error.

Let's evaluate before applying the 3 digit arithmetic chopping rule

y = 1.37³ - 5 × 1.37² + 6 × 1.37 + 0.55

y = 1.956853

Let evaluate each components of the polynomial one by one

Note that: 3-digit arithmetic chopping means to approximate chop off or remove number after the 3 significant figures.

y = x³− 5x² + 6x + 0.55 at x = 1.37.

x³ = 1.37³ = 2.571353

≈ 2.57

x² = 1.37² = 1.8769

≈ 1.88

5x² = 1.87 × 5

= 9.35

x = 1.37

6x = 1.37 × 6

6x = 8.22

Evaluating the polynomial

y = 2.57 - 9.38 + 8.22 + 0.55

y = 1.98

The percent relative round-off error =

1.956853 - 1.98/1.956853 × 100

= -1.183%

b. Express y as y = ((x − 5)x + 6)x + 0.55 (this is the same equation). Use again 3-digit arithmetic with chopping. Evaluate the percent relative round-off error and compare with part (a). Make the conclusion about which form of the polynomial is superior.

y = ((x − 5)x + 6)x + 0.55

Evaluating with the 3 digit chop off rule is applied

= ((1.37 - 5)1.37 + 6)1.37 + 0.55

=( 1.8769 - 6.85) + 6) 1.37 + 0.55

= (- 4.9731 + 6 )1.37 + 0.55

= 1.0269 × 1.37 + 0.55

= 1.406853

= 1.956853.

≈ 1.96

Note in: evaluating before applying the 3 digit arithmetic chopping rule

y = 1.37³ - 5 × 1.37² + 6 × 1.37 + 0.55

y = 1.956853

The percent relative round-off error

1.956853 - 1.96/1.956853 × 100

= -0.161%

Comparing part a and b together, part b is more superior because the percent(%) error is smaller when compared to part a

3 0
3 years ago
A rectangle is 36 inches x 48 inches.<br><br> what is the perimeter.?<br><br> what is its area.?
olga nikolaevna [1]
For area, just multiply the length x width
So therefore, multiply 36 inches x 48 inches and there you have it.

Now for the perimeter, it is a little different
You'd have to add the sides up together to get your answer for the perimeter.
So, 36 in + 36 in + 48 in + 48 in = answer
3 0
3 years ago
Read 2 more answers
Please i need help!!
LiRa [457]

Answer:

Option B is correct

Step-by-step explanation:

because when you compare the table with graph you can understand easily.

8 0
3 years ago
Read 2 more answers
What does information meanins
Sergeeva-Olga [200]
<span>facts provided or learned about something or someone."a vital piece of information"<span>synonyms:<span> details, particulars, facts, figures, statistics, data; <span>More</span></span></span>LAWa formal criminal charge lodged with a court or magistrate by a prosecutor without the aid of a grand jury.plural noun: pieces of information"the tenant may lay an information against his landlord"2.what is conveyed or represented by a particular arrangement or sequence of things?"genetically transmitted information"<span>COMPUTINGdata as processed, stored or transmitted by a computer.(in information theory) a mathematical quantity expressing the probability of occurrence of a particular sequence of symbols, impulses, etc., as contrasted with that of alternative sequences.</span></span>
8 0
3 years ago
Read 2 more answers
A chemical company makes up batches of copper sulfate solution by adding 250 kg of copper sulfate powder to 1000 liters of water
shepuryov [24]

Answer:

  • 0.07 kg

Step-by-step explanation:

  • <em>Assuming copper sulfate has same density as water</em>

<u>Chemical to water ratio as per given is:</u>

  • 250 kg : 1000 liter = 1 kg : 4 liter

Lab solution is 350 ml

<u>Converting to same ratio as above:</u>

350/(1 + 4) = 70 ml

  • 70 ml : 280 ml = 70 g : 180 ml = 0.07 kg : 180 ml

Answer is 0.07 kg

4 0
2 years ago
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