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disa [49]
3 years ago
12

What is the range of the exponential function shown below f(x)=2•7^x

Mathematics
1 answer:
Gemiola [76]3 years ago
4 0

This is rather a sneaky question. You don't know exactly what numbers you can use and what numbers not.

For example, are you allowed to use x = -  3. The answer is yes

f(-3) = 2*7^(-3) = 2/7^3 = 2/147.

How about 0? If there is going to be a problem, zero is usually the number that causes the problem.

f(0) = 2*7^(0) = 2 * 1 = 2 and in this case 0 is just fine.

How about positive numbers? No they are all good.

So the range is -∞ < y < ∞

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3 years ago
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Answer:

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Step-by-step explanation:

Let the unknown two numbers be x & y.

According to the question,

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x - y = 8 ⇒ ( 2 )

First let us find the value of x.

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Hope this helps you :-)

Let me know if you have any other questions :-)

8 0
3 years ago
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7 0
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Solve : a) (x-4)(x-2)=0​
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Step-by-step explanation:

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—————-

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