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Nady [450]
4 years ago
10

Is there a difference between y=cos^-1(x) and y=(cos x)^-1?

Mathematics
1 answer:
NeX [460]4 years ago
8 0
\cos^{-1}x could be used to denote the inverse cosine function, while (\cos x)^{-1} probably instead refers to the reciprocal cosine function, i.e. the secant function.

In general, \cos^{-1}x\neq(\cos x)^{-1}, but it's not unheard of for them to mean the same thing, especially in a context where something like \arccos x is used explicitly to denote the inverse function. I'd be careful about assuming they are always the same.
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Which is the mode of this data set?<br> 55, 78, 43, 39, 78, 61, 75, 50, 43, 78
Vikentia [17]

Answer:

78

Step-by-step explanation:

Mode = number that appears most in a set of numbers

The number that appears the most in this set is 78. So, the mode is 78. Hope it helps!

6 0
3 years ago
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Which description compares the vertical asymptote(s) of Function A and Function B correctly?
r-ruslan [8.4K]
Function A:  f(x)=\frac{1}{x}+4.  Vertical asymptotes are in the form x=, and they are a vertical line that the function approaches but never hits.  They can be easily found by looking for values of <em>x</em> that can not be graphed.  In this case, <em>x</em> cannot equal 0, as we cannot divide by 0.  Therefore <em>x</em>=0 is a vertical asymptote for this function.  The horizontal asymptote is in the form <em>y</em>=, and is a horizontal line that the function approaches but never hits.  It can be found by finding the limit of the function.  In this case, as <em>x</em> increases, 1/<em>x</em> gets closer and closer to 0.  As that part of the function gets closer to 0, the overall function gets closer to 0+4 or 4.  Thus y=4 would be the horizontal asymptote for function A.
Function B:  From the graph we can see that the function approaches the line x=2 but never hits.  This is the vertical asymptote.  We can also see from the graph that the function approaches the line x=1 but never hits.  This is the horizontal asymptote.
3 0
3 years ago
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How do you solve the quadratic equation 3x2=12
PilotLPTM [1.2K]

The answer to your equation is x=2.


Why? Because..................


3x*2=12

Divide both sides by 3*2

3x*2/3*3=12/3*2


Simplify

12/3*2

x=6


Hope I helped. Mark as Brainliest?



3 0
3 years ago
Determine the slope of the line that passes though the points (2,-5) and (4,3).
schepotkina [342]

Answer: slope = 2

Step-by-step explanation:

The formula for calculating slope is given as :

m = \frac{y_{2}-y_{1}}{x_{2}-x_{1} }

x_{1}=2

x_{2}=4

y_{1}=-5

y_{2}=3

substituting into the formula , we have :

m = \frac{3-(-5)}{4-2}

m = \frac{8}{2}

m = 2

Therefore : slope = 2

5 0
3 years ago
What is 2x to the 3rd power minus 3 in verbal expression
maw [93]

Answer:

5x

Step-by-step explanation:

4 0
3 years ago
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