Answer:
Step-by-step explanation:
Given y = coskt
y' = -ksinkt
y'' = -k²coskt
Substitute this y'' into the expression 25y'' = −16y
25(-k²coskt) = -16(coskt)
25k²coskt = 16(coskt)
25k² = 16
k² = 16/25
k = ±√16/25
k = ±4/5
b) from the DE 25y'' = −16y
Rearrange
25y''+16y = 0
Expressing using auxiliary equation
25m² + 16 = 0
25m² = -16
m² = -16/25
m = ±4/5 I
m = 0+4/5 I
Since the auxiliary root is complex number
The solution to the DE will be expressed as;
y = Asinmt + Bsinmt
Since k = m
y = Asinkt+Bsinkt where A and B are constants
Answer:
1,183
Step-by-step explanation:
first you do 630 and add 273 you should get 903 then add 286 to that and you get 1,183
A hypothesis is only tentative: to make sure it's valid, you have to test it.
Answer:
Step-by-step explanation:
EC=12
AC=24
Slope: (y2-y1)/(x2-x1)
(7-4)/(4-3) = 3/1
The answer is A. 3
