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Snezhnost [94]
3 years ago
6

What is the range of f(x) = (3/4)^x – 4?

Mathematics
2 answers:
Alchen [17]3 years ago
7 0

Answer:

set builder notation is  {f(x) | f(x) ≥ –4}

Interval notation is [-4, ∞)

Step-by-step explanation:

f(x) = (\frac{3}{4})^x -4

Range is the set of all y values for which the function is defined

In general, for function f(x)= a^x +k the range of the function is f(x)>= k

Now we compare general form of the function with the given function and find out the range

the value of k = -4

so the range of the given function is f(x) >= -4

set builder notation is  {f(x) | f(x) ≥ –4}

Interval notation is [-4, ∞)

Nostrana [21]3 years ago
6 0
Range = <span>{f(x) | f(x) ≥ –4}</span>
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3√x -2/x^2<br><br>please show step by step of differentiation before combining the terms. ​
EastWind [94]

Answer:

Step-by-step explanation:

Before we differentiate, let us assign a variable to the function. Let y be equal to the function i.e let y = 3√x -2/x²

In differentiation if y = ax^{n}, then \frac{dy}{dx} = nax^{n-1} where n is a constant and dy/dx means we are differentiating the function y with respect to x.

Applying the formula o the question given;

y= 3\sqrt{x}  -2/x^2\\y = 3{x}^\frac{1}{2}  - 2x^{-2} \\\\

On differentiating the resulting function;

\frac{dy}{dx} = \frac{1}{2}*3x^{\frac{1}{2}-1 }   - (-2)x^{-2-1} \\\\\frac{dy}{dx} = \frac{1}{2}*3x^{-\frac{1}{2}} + 2x^{-3}\\ \\\frac{dy}{dx} = \frac{1}{2}*{\frac{3}{x^{\frac{1}{2} } }} + \frac{2}{x^{3} } \\\\\frac{dy}{dx} = {\frac{3}{2x^{\frac{1}{2} } }} + \frac{2}{x^{3} }\\\\\frac{dy}{dx} = {\frac{3}{2\sqrt{x}  }} + \frac{2}{x^{3} }

To combine the terms, we will add up by finding their LCM.

\frac{dy}{dx} = {\frac{3}{2\sqrt{x}  }} + \frac{2}{x^{3} }\\\frac{dy}{dx}  = \frac{3x^3+4\sqrt{x} }{2x^{3} \sqrt{x}}

3 0
4 years ago
If peter can type 80 words in 2 minutes how many words can he type in 5 minutes if he continues to type at the same rate. Show a
klasskru [66]

Answer:

200 words are peter can be type in 5 minutes.

Step-by-step explanation:

As given

If peter can type 80 words in 2 minutes .

i.e

80 words = 2 minutes

Now words type in 1 minutes.

1\ minutes = \frac{80}{2}\ words

1 minutes = 40 words

Now calculate number of words are type in 5 minutes.

Words are type in 5 minutes = Number of minutes × Number of words are type in 1 minutes.

Number of minutes = 5 minutes

Number of words are type in 1 minutes = 40 words

Words are type in 5 minutes = 5 × 40

                                                = 200 words

Therefore  200 words are peter can be type in 5 minutes.

4 0
4 years ago
Anybody help plz? this very hard
cupoosta [38]
Josh I was just kidding about you I love you love
4 0
3 years ago
Read 2 more answers
Which expression is NOT equivalent to −38⋅(−4+12)? Drag this expression to the box.
lesya [120]

I had this question so here's the answer and explanation! :)

Answer:

The answer to your question is the first option :D

Step-by-step explanation:

Original expression

                                -3/8 (-4 + 1/2)

First option    -3/8 (-4)  + (3/8)(1/2)       This option is not equivalent because

                                                             they forgot the negative sign of the

                                                             second term.

Second option (-3/8)(-4) + (-3/8)(1/2)    This option is equivalent to the

                                                              original. Distributive property

Third option    (-3/2)(-3 1/2)                 This option is equivalent to the original

Fourth option  (-3/8)(-3) + (-3/8)(-1/2)  This option is equivalent to the original

HOPE THIS HELPS :)

5 0
3 years ago
Read 2 more answers
The sum of two numbers is 12. 3 times the first number decreased by the second number is 24. Find the numbers.
lana [24]

Answer:

9 and 3

Step-by-step explanation:

Let the first number be x and second number be y hence their sum

x+y=12 ......(1)

Making x the subject theb x=12-y

Three times be first number is 3x

3x-y=24.......(2)

Adding the two sets of equations then

4x=36

X=36/4=9

The second number will be 12-9=3

So the first number is 9 and second is 3

6 0
4 years ago
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