I hope this helps, let me know if it doesn't make sense
here............................
A) A (1,-1)
b) P' (3,1)
c) Rule: (x, y) → (x + 2, y - 1)
Their signs are positive. if you multiple a positive by a positive, you get a positive. but if you multiple a negative by a negative, you get a positive. if you multiply two of the same sign numbers, the product is always positive.
The solution can be determined if we can specify the value of the arbitrary constant C₁. We do this by using the initial condition. When x=0, y is equal to -18. Substitute this to the general solution.
y = 1/(1 + C₁e⁻ˣ<span>)
-18 = 1/</span>(1 + C₁e⁰)
-18 = 1/(1+C₁)
C₁ = -1- 1/18 = -19/18
Therefore, the specific solution is:
y = 1/(1 - 19e⁻ˣ/18)
