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sasho [114]
2 years ago
12

Assume that x is a char variable has been declared and already given a value. Write an expression whose value is true if and onl

y if x is a upper-case letter.
Mathematics
1 answer:
Lorico [155]2 years ago
4 0

Answer:

bool b = isupper(x);

Step-by-step explanation:

I have written the expression for a char variable x.The isupper(x) will return true if the character x is upper case and false if the character x is lower case.

I have stored the returned value to a bool variable b .So the value of variable b will be true only when the x is in uppercase and false when b is lower case.

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Which of the following functions describes the sequence 4, –2, 1, –12, 14, . . .? A. f(1) = 4, f(n + 1) = –2f(n) for n ≥ 1 B. f(
AlekseyPX

Answer: D. f(1) = 4,\ \ f(n+1)=\dfrac{-1}{2}f(n)

Step-by-step explanation:

The given sequence:  4, -2,1,\dfrac{-1}{2},\dfrac14,....

Here, first term: f(1)=4

Second term: f(2)=-2

Third term : f(3)=\dfrac{-1}{2}

It can be observed that it is neither increasing nor decreasing sequence but having the common ratio.

Common ratio: r=\dfrac{f(2)}{f(1)}=\dfrac{-2}{4}=\dfrac{-1}{2}

So, f(n+1)=\dfrac{-1}{2}f(n)  [as in G.P. nth term= a_{n+1}=ar^n]

Hence, correct option is D. f(1) = 4,\ \ f(n+1)=\dfrac{-1}{2}f(n)

5 0
1 year ago
Write an equation for the cubic polynomial function shown. To find the equation of the function, first find the of the graph.
lbvjy [14]

The answer would look like this:

Zeros 2, 3, 5

(x-2) (x-3) (x-5) = 0

(x^2 - 2x- 3x +6) (x - 5) =0

(x^2 – 5x + 6) (x - 5) = 0

x^2 (x -5) - 5x (x - 5) + 6 (x - 5)=0

x^3 - 5x^2 -5x^2 + 25x + 6x - 30 = 0

The cubic polynomial function would be this one:

x^3 -10 x^2 + 31x - 30 = 0


check the attachment for the graph

5 0
2 years ago
Read 2 more answers
To be able to say with 95% confidence level that the standard deviation of a data set is within 10% of the population's standard
boyakko [2]
The answer in this question is 97.
0.20 SD = 1.96 SD / sqrt(n)
n = (1.96 / .200)^2
n = 96.04  
Which is rounded Up to 97
The number of observations within the data set must be greater than or equal to the quantity of 97.
8 0
2 years ago
A sequence is defined recursively by the formula f(n+1)=-2f(n). The first term of the sequence is -1.5. What is the next term in
levacccp [35]
Given f(n+1) =-2f(n)
here f(n) =f(1) = -1.5
f(n+1) =f(2) = -2 * -1.5 = 3
9 0
2 years ago
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The thickness of a conductive coating in micrometers has a density function of 600x-2 for 100μm < x < 120 μm and zero for
ELEN [110]

Calculator can help you

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