21.47 percent hope it heeeeeeeeeeeeeeeeeeeeeeeeepls
Hello,
Maximum of g(x) if all points are defined: 11
Maximum of f(x):
f'(x)=-4x=0==>x=0 and y=9
Answer 3 (g(x) has a greater maximum value than f(x))
Answer:
22.
x=35
y=8
23.
x=30
y=50
Step-by-step explanation:
At the risk of piling on after correct answers have already been given, I’ll offer another way to address this problem. Recall that, if
θ
is real, cos()=Re()
cos
(
θ
)
=
R
e
(
e
i
θ
)
. So, with
A
and
B
real,
(+)+(−)=(+−)=2cos()
e
i
(
A
+
B
)
+
e
i
(
A
−
B
)
=
e
i
A
(
e
i
B
+
e
−
i
B
)
=
2
e
i
A
cos
(
B
)
Finally,
cos(+)+cos(−)=Re((+)+(−))=Re(2cos())
cos
(
A
+
B
)
+
cos
(
A
−
B
)
=
R
e
(
e
i
(
A
+
B
)
+
e
i
(
A
−
B
)
)
=
R
e
(
2
e
i
A
cos
(
B
)
)
=2cos()cos()
Answer: x = i√15/5 , - i√15/5
Step-by-step explanation: Isolate the variable by dividing each side by factors that don't contain the variable.
Hope this helps you out! ☺