Determine whether the given signal is a solution to the difference equation. Then find the general solution to the difference equation. y_k = k^2: y_k + 2 + 8y_k + 1 - 9y_k = 20k + 12 the given signal is a solution to the difference equation? No Yes What is the general solution to the difference equation? y_k = 20k + 12 + c_1 k^2 + c_2(-9)^k y_k = k^2 + c_1(-9)^k + c_2 y_k = 20k + 12 + c_1(-9)^k + c_2 Since y_k = k^2 is not a particular solution, there is not enough information to determine the general solution.

The answer to this question can be defined as follows:

Step-by-step explanation:

The given equation is:

put,

hence y_k=k^2 is its solution.

Now,

the symbol form is:

The general solution is:

The complete solution is:

The answer is option b:

After solve the complete solution is:

1. 180°. the sum of the interior angles of a triangle is 180°, for the equilateral triangle that it has three equals side is 60°+60°+60°=180°.

2. 60°. each interior angle of a equilateral triangle is 60°

3. 120°. the measure of ∠m is 120°, the sum of the angles ∠m and ∠n is equal to 180°. so, in order to find the measure of ∠m, we have ∠m+∠n=180° > ∠m=180°-∠n > ∠m=180°-60°=120°.

4. 360°. the sum of the exterior angles of an equilateral triangle is ∠m+∠r+∠x=120°+120°+120°=360°. the exterior angles of any triangle always add 360°.

answer: b f g .

step-by-step explanation: