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State the order of the differential equation and verify that the given function is a solution. $$\left(1-t^{2}\right) y^{\prime \prime}-2 t y^{\prime}+2 y=0, y(t)=t$$

Short Answer

Expert verified
The order is 2. The function \( y(t) = t \) is a solution.

Step by step solution

01

Identify the Differential Equation

Given the differential equation: \[ \left(1-t^{2}\right) y^{\prime \prime}-2 t y^{\prime}+2 y=0 \]
02

State the Order of the Differential Equation

The order of a differential equation is determined by the highest order derivative in the equation. In this case, the highest order derivative is \( y^{\prime \prime} \), which is the second derivative. Therefore, the differential equation is of order 2.
03

Verify the Function is a Solution

The proposed solution is \( y(t)=t \). First, find the first and second derivatives of \( y(t) \): \[ y^{\prime}(t) = 1, \quad y^{\prime \prime}(t) = 0 \] Substitute these derivatives into the differential equation: \[ (1-t^2) \cdot 0 - 2t \cdot 1 + 2t = 0 \] Simplify the expression: \[ 0 - 2t + 2t = 0 \] This verifies that \( y(t) = t \) satisfies the differential equation.

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Key Concepts

These are the key concepts you need to understand to accurately answer the question.

Differential Equation
A differential equation is an equation that involves an unknown function and its derivatives. These equations are powerful tools in mathematics and are used to model real-life scenarios such as physics phenomena, engineering problems, and more. In the context of our exercise, the differential equation given is:
\( \left(1-t^{2}\right) y^{\prime \prime}-2 t y^{\prime}+2 y=0 \)
This is a second-order differential equation, meaning that the highest derivative is the second derivative (\

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Most popular questions from this chapter

A certain drug is administered intravenously to a patient at the continuous rate of \(r\) milligrams per hour. The paticnt's body removes the drug from the bloodstream at a rate proportional to the amount of the drug in the blood, with constant of proportionality \(k=.5\) (a) Write a differential equation that is satisfied by the amount \(f(t)\) of the drug in the blood at time \(t\) (in hours). (b) Find \(f(t)\) assuming that \(f(0)=0 .\) (Give your answer in terms of \(r .)\) (c) In a therapeutic 2 -hour infusion, the amount of drug in the body should reach 1 milligram within 1 hour of administration and stay above this level for another hour. However, to avoid toxicity, the amount of drug in the body should not exceed 2 milligrams at any time. Plot the graph of \(f(t)\) on the interval \(1 \leq t \leq 2,\) as \(r\) varies between 1 and 2 by increments of \(.1 .\) That is, plot \(f(t)\) for \(r=1,1.1,1.2,1.3, \ldots . .2 .\) By looking at the graphs, pick the values of \(r\) that yield a therapeutic and nontoxic 2-hour infusion.

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