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stepan [7]
3 years ago
9

Find the function value.. . cos^2(7pi/8)=

Mathematics
1 answer:
Greeley [361]3 years ago
4 0
To evaluate this function, we use the calculator. We change the setting to radian first because we are using pi and thensimply input the cosine of 7 pi over 8. Then we square the answer. <span>We expect this number to be less than 1. </span>The function value is 0.8536. 
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Consider the functions f(x) = (4/5)^x and g(x) = (4/5)^x + 6. What are the ranges of the two functions?
Nataliya [291]
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The number 0 goes in the first blank for f(x)
The number 6 goes in the second blank for g(x)

----------------------------------------------------------------------------------

Explanation:

As x gets larger and larger, the expression (4/5)^x will get smaller and smaller. What's going on is that we are repeatedly multiplying (4/5) with itself over and over if we assume x is some whole number. For example, if x = 100, then we'll have 100 copies of (4/5) multiplied out. Each time we multiply by (4/5), the result gets smaller. 

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3 0
3 years ago
"Use the given graph to determine the limit, if it exists.
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love history [14]
Let's simplify step-by-step.
16
y
−
46
y
+
15
8
y
−
3
=
16
y
+
−
46
y
+
15
8
y
+
−
3
Combine Like Terms:
=
16
y
+
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46
y
+
15
8
y
+
−
3
=
(
16
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−
46
y
+
15
8
y
)
+
(
−
3
)
=
−
225
8
y
+
−
3
8 0
4 years ago
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