I'm so sorry for not answer but which grade and what workbook is it?
Answer:
a-
b-
c-
Step-by-step explanation:
a.7 y''-7 y =0
Auxillary equation
D=1,-1
Then , the solution of given differential equation
2.
Y=
Substitute in the given differential equation
Hence, is not a solution of given differential equation
are also not a solution of given differential equation.
y=
Substitute the values in the differential equation
=
Hence, is a solution of given differential equation.
c.
Substitute the values in the differential equation
Hence, is a solution of given differential equation.
a-
b-
c-
Step-by-step explanation:
15 = |x| - 5
|x| - 5 = 15
|x| = 15 + 5
|x| = 20
x = ±20
x = -20 or 20
Option → B
Answer:
-
Step-by-step explanation:
To convert degrees to radians
radian measure = degree measure × , then
radian measure = - 220 × ( divide 220 and 180 by 20 )
= -
Answer:
if you have a calculator...
Step-by-step explanation:
take 85 to the 5th power and then divide that by 3.