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Differential Equations · Question 21 of 67

Question 21

EasyOriginal question

Read the two statements and choose the correct option.

I. y=Aexy = Ae^{x}, AA arbitrary, is the general solution of dydx=y\frac{dy}{dx} = y.

II. y=2exy = 2e^{x} is a particular solution of dydx=y\frac{dy}{dx} = y.

Options for question 21

Show the answer and explanation
CorrectNot quiteAnswer C

Correct answer: C

Explanation

  1. I: ddx(Aex)=Aex=y\frac{d}{dx}(Ae^{x}) = Ae^{x} = y for every AA, and an order-1 equation needs one constant. True.

  2. II: A=2A = 2 is one choice of the constant, so it is a particular solution. True.

Concept
General and particular solutions
Typical time
60 s
Your time
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The rule this testsGeneral and particular solutions
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Ten questions from Differential Equations, at your own pace.

Practise this chapter →

Ten questions from Differential Equations, at your own pace.