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worty [1.4K]
1 year ago
12

PLSSS HELP IF YOU TURLY KNOW THISS

Mathematics
1 answer:
andrew-mc [135]1 year ago
8 0

Answer:

7x

Step-by-step explanation:

x is something you find in 2 parts of the equation. Simply do 10-3 and add an x to the end

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julia-pushkina [17]

Complete Question

The complete question is shown on the first uploaded

Answer:

y_1 is not a solution of the differential equation

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Step-by-step explanation:

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Let consider the first equation to substitute

y_1  = cosx  +sinx

y_1'  = -sinx  +cosx

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Let consider the second equation to substitute

y_2 =  cos2x

y_2' =  -2sin2x

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So

y_2'' + y_2'  = -4cos2x-2sin2x

So

-4cos2x-2sin2x \ne  cos2x

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y_3 =  sin 2x

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So

y_3'' + y_3'  = -4sin2x  - 2cos2x

So

-4sin2x  - 2cos2x \ne  cos2x

This means  that  y_3 is not a solution of the differential equation

6 0
3 years ago
X²=9 determine if x belongs to Q or belongs to Q dash​
Elis [28]

x = 3 is the answer can you pls add me brainliest answer

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2 years ago
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