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elena55 [62]
2 years ago
8

Cos^2xcos^2x/2 -sin^2(x/2 -pi/4)sin^2x

Mathematics
1 answer:
Mazyrski [523]2 years ago
6 0

Evaluate: int (sin 2x)/sqrt(sin^4x+4 sin^2x-2) dx.

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Rosa conducted a survey of 25 students' favorite types of music. The results are shown in the table. Of the 600 students in the
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Answer:

400

Step-by-step explanation:

8 0
2 years ago
Read 2 more answers
Limit of x^2-81/x+9<br> As x goes toward -9
Semmy [17]
Hello,

Use the factoration

a^2 - b^2 = (a - b)(a + b)

Then,

x^2 - 81 = x^2 - 9^2

x^2 - 9^2 = ( x - 9).(x + 9)

Then,

Lim (x^2- 81) /(x+9)

= Lim (x -9)(x+9)/(x+9)

Simplity x + 9

Lim (x -9)

Now replace x = -9

Lim ( -9 -9)

Lim -18 = -18
_______________

The second method without using factorization would be to calculate the limit by the hospital rule.

Lim f(x)/g(x) = lim f(x)'/g(x)'

Where,

f(x)' and g(x)' are the derivates.

Let f(x) = x^2 -81

f(x)' = 2x + 0
f(x)' = 2x

Let g(x) = x +9

g(x)' = 1 + 0
g(x)' = 1

Then the Lim stay:

Lim (x^2 -81)/(x+9) = Lim 2x /1

Now replace x = -9

Lim 2×-9 = Lim -18

= -18




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3 years ago
Please help me, im so confused it's "Anthony owns a $133,000 brick home in Area B. How much will it cost him to insure the home
ExtremeBDS [4]
Hi The answer is wood frame
8 0
3 years ago
Click the parts of the grid to shade 20% of the whole grid.
pantera1 [17]

Answer:u fill in 4 tiles

It’s a 4x5 square so there is 20 tiles

And 20 divided by 4 equals 5

So if u fill in 4 tiles it’s like filling in 1/5 aka 20%

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3 years ago
Which list shows the lengths from shortest to longest ?
wel

Answer:

It’s a

Step-by-step explanation:

Tell me if I’m wrong

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3 years ago
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