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Natali5045456 [20]
2 years ago
13

Cho hàm số 3 biến. Hỏi có bao nhiêu đạo hàm riêng cấp 3

Mathematics
1 answer:
viktelen [127]2 years ago
5 0
JajabdndisowpqññanBanska
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A local hamburger shop sold a combined total of 754 hamburgers and cheeseburgers on Saturday. There was 54 more cheeseburgers so
DochEvi [55]
Answer: 323 hamburgers

754/2=377
377 ham 377 cheese
54 more cheese than ham
377 ham - 54 = 323 hamburgers total sold on Saturday
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2 years ago
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Using appropriate properties, find the value of 249² - 248²
Lady_Fox [76]

Answer:

\boxed{\bold{\huge{\boxed{497}}}}

Step-by-step explanation:

=> \sf 249^2 - 248^2

<u>Using Formula</u> \sf a^2 - b^2 = (a+b)(a-b)

<u><em>Where </em></u>

a = 249

b = 248

=> \sf (249+248)(249-248)

=> \sf (497)(1)

=> 497

3 0
2 years ago
BRAINLY AND POINTS FOR STEP BY STEP<br> b-4z =a for b<br> ____<br> 5
fgiga [73]

Answer:

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7 0
3 years ago
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Solve:<br> sin5x - cos2x + sin x = 0.
mote1985 [20]

Answer:

x = 10 , 45 degrees.

Step-by-step explanation:

This seems a tricky one .

I guess we can use   sin A + sin B =  2 sin (A+B)/2 cos (A - B) / 2

so sin 5x + sin x = 2 sin 3x cos 2x so our equation becomes

2 sin 3x cos 2x - cos 2x = 0

cos 2x ( 2 sin 3x - 1) = 0

so 2 sin 3x = 1

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giving 3x = 30 degrees and x = 10 degrees

or cos 2x = 0

so 2x = 90

giving x = 45 degrees.

8 0
3 years ago
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