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densk [106]
3 years ago
10

Solve the system of equations below using the inverse of matrix

Mathematics
1 answer:
amid [387]3 years ago
8 0

Answer:

(x, y) = (4,-3)

Step-by-step explanation:

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Solve (D*D + 4)y = x + cos²x​
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Answer:

(D^2 + 9)y = cos 2x….(1). The corresponding homogeneous equation is (D^2 +9)y= 0,…(2), whose auxiliary equation is m^2 + 9 = 0, which has (+/-)3i as roots. The general solution of (2) is y = A.cos(3x) + B.sin(3x). Now to get a general solution of (1) we have just to add to the above, a particular solution of (1). One such solution is [cos(2x)]/[-2^2 +9] = (1/5).cos 2x. Hence a general solution of the given equation is given by y = A.cos(3x) + B.sin(3x) + (1/5)cos(2x), where A and B are arbitrary constants. The above solution incorporates all the solutions of the given equation.

Step-by-step explanation:

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3 years ago
Marianne has 5/8 package of peas. She cooks 2/3 of those peas for 5 people. If each person is served an equal amount, what fract
creativ13 [48]
5/8 and 2/3 so...
8 times 3 is 24 so now put your fraction over twenty four
15/24=5/8
15/24 so fifteen out of twenty fourths of the package is what she has. She takes ten out of the fifteenths because fifteen divided by three is five then multiply by two is ten. Then divide by five and you get two.
15/24. 10-> 15/24 cause... 15 divided by 3 ( from the two thirds she cooked) is 5 then * by 2... 5*2=10
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What is 300 * 234837 ÷ 82/382 - 3467826??<br> Not a troll I actually need the answer to this-
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Answer:

324731200.829

Step-by-step explanation: no

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5/7x1/9 is approximately
Alexxandr [17]

Answer:

5/63 is the answer I gotten.

Step-by-step explanation:

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