The solution of a certain differential equation is of the form y(t)=aexp(7t)+bexp(11t), where a and b are constants. The solutio n has initial conditions y(0)=1 and y′(0)=4. Find the solution by using the initial conditions to get linear equations for a and b.
2 answers:
Answer:
Step-by-step explanation:
Given that the solution of a certain differential equation is of the form
Use the initial conditions
i) y(0) =1
... I
ii) y'(0) = 4
Find derivative of y first and then substitute
Now using I and II we solve for a and b
Substitute b = 1-a in II
Hence solution is
Answer:
y(t) = a exp(3t) + b exp(4t) conditions, y(0) = 3 y'(0) = 3 y(0) = a exp(3 x 0) + b exp(4 x 0) = a exp(0) + b exp(0) = (a x 1) + (b x 1) = a + b y'(0) = 0 so the linear equation is, a + b = 3
Step-by-step explanation:
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