Find the solution of the given initial value problem:
y''- y = 0, y(0) = 2, y'(0) = -1/2

 The required solution of the given IVP is

Step-by-step explanation:  We are given to find the solution of the following initial value problem :

Let be an auxiliary solution of the given differential equation.

Then, we have

Substituting these values in the given differential equation, we have

So, the general solution of the given equation is

where A and B are constants.

This gives, after differentiating with respect to x that

The given conditions implies that

and

Adding equations (i) and (ii), we get

From equation (i), we get

Substituting the values of A and B in the general solution, we get

Thus, the required solution of the given IVP is

total amount of money that he should pay if he has not used his duty free exemption is $98

step-by-step explanation:

given a united states citizen returning to the states declares the following items at the customs office: 3 shirts at $8.50 each 2 dresses at $27.50 each 1 pair of gold cuff links at $17.50 per pair. we have to find how much he pay

cost of 3 shirts if one cost at $8.50 is

cost of 2 dresses if one cost at $27.50 is  

cost of 1 pair of gold cuff at $17.50

so, total amount of money that he should pay if he has not used his duty free exemption is   $25.5+$55+$17.50=$98

(x) - (y) = (1 + 4i)