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Nadusha1986 [10]
3 years ago
7

For each initial value problem, determine whether Picard's Theorem can be used to show the existence of a unique solution in an

open interval containing t = 0. Justify your answer.
(a) y' = ty4/3, y(0) = 0
(b) y' = tył/3, y(0) = 0
(c) y' = tył/3, y(0) = 1
Mathematics
1 answer:
Alinara [238K]3 years ago
6 0

Answer:

Part a: f , \, f_y is continuous at the initial value (0,0) so due to Picardi theorem there exists an interval such that the IVP has a unique solution.

Part b: f_y is not continuous at the initial value (0,0) so due to Picardi theorem there does not exist an interval such that the IVP has a unique solution.

part c: f , \, f_y is continuous at the initial value (0,1) so due to Picardi theorem there exists an interval such that the IVP has a unique solution.

Step-by-step explanation:

Part a

as y^{' }=ty^{4/3}

Let

f(t,y)=ty^{4/3}

Now derivative wrt y is given as

f_y=\frac{4}{3}ty^{1/3}

Finding continuity via the initial value

f is continuous on R^2 also f_y is also continuous on R^2

Also

f , \, f_y is continuous at the initial value (0,0) so due to Picardi theorem there exists an interval such that the IVP has a unique solution.

Part b

as y^{' }=ty^{1/3}

Let

f(t,y)=ty^{1/3}

Now derivative wrt y is given as

f_y=\frac{1}{3}ty^{-2/3}

Finding continuity via the initial value

f is continuous on R^2 also f_y is also continuous on R^2

Also

f_y is not continuous at the initial value (0,0) so due to Picardi theorem there does not exist an interval such that the IVP has a unique solution.

Part c

as y^{' }=ty^{1/3}

Let

f(t,y)=ty^{1/3}

Now derivative wrt y is given as

f_y=\frac{1}{3}ty^{-2/3}

Finding continuity via the initial value

f is continuous on R^2 also f_y is also continuous on R^2 when y\neq 0

Also

f , \, f_y is continuous at the initial value (0,1) so due to Picardi theorem there exists an interval such that the IVP has a unique solution.

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Step-by-step explanation:

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7/ 5/7 = 0.2

We find 0.1 = 1/10 and we know that 1/10 of 35 is 3.5

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3 years ago
An angle measures 74° less than the measure of its supplementary angle. What is the measure of each angle?
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Given that the two angles are supplementary, the measure of each angle is 127° and 53°.

<h3>What is the measure of each angle?</h3>

Supplementary angles are two angles whose sum is 180 degrees.

Given the data in the question, let 'x' represent the measure of the first angle.

  • Measure of first angle = x
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Since supplementary angles are two angles whose sum is 180 degrees.

Measure of first angle + Measure of second angle = 180

x + ( x - 74 ) = 180

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Measure of first angle = x = 127°

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Given that the two angles are supplementary, the measure of each angle is 127° and 53°.

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Answer:

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Step-by-step explanation:

Given that,

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