4. (a) Verify u(x, t) = e-,rE R',t> 0 satisfies the following partial differential equation: %3D IER',t>0. %3D (b) Find the following integral u(z, t)dr.
4. (a) Verify u(x, t) = e-,rE R',t> 0 satisfies the following partial differential equation: %3D IER',t>0. %3D (b) Find the following integral u(z, t)dr.
Advanced Engineering Mathematics
10th Edition
ISBN:9780470458365
Author:Erwin Kreyszig
Publisher:Erwin Kreyszig
Chapter2: Second-order Linear Odes
Section: Chapter Questions
Problem 1RQ
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A scalar function is a rule that is used to associate a number or quantity with a particular point in a plane. If , then the independent variable x and t are called the input of the function, and the dependent variable y is called the output of the function.
The partial derivative of a multivariable function with respect to a variable is the derivative of a function with respect to that particular variable, by treating all other variables as constants. For example, if is a multivariable function, then the partial derivative of f with respect to x is (since the derivative of with respect to x is and is treated as constant while calculating the partial derivative).
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