07/15/19

Calculus Question
A curve C is described by parametric equations x= 1/3 t3 +1 and y= t2-3.a.) Find the values of t corresponding to points P (4/3,-2) and Q (10,6) on C.b.) Find the length of the arc of C from point... more
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07/15/19

Arc Length of the curve
Find the arc length of the curve y= x3/3 + 1/4x x=1 to x=2
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07/15/19

For math requirements

The tower is 500 meters high. Suppose a building is erected such that the base of the building is on the same plane as the base of the tower, the angle of elevation from the top of the building to... more
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07/15/19

Finite Word Problem
An experiment consists of rolling two fair dice and adding the dots on the two sides facing up. Assuming each simple event is as likely as any​ other, find the probability that the sum of the dots... more
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C++

07/14/19

What is The Rule of Three?
- What does *copying an object* mean? - What are the *copy constructor* and the *copy assignment operator*? - When do I need to declare them myself? - How can I prevent my objects from being... more
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07/14/19

Equations to solve problems

A track star ran the 100-meter event in six track meets. Her average time for all six meets was 11.8 seconds. She could not find the record for her running time in the last meet, but she had all... more
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07/14/19

Find the mean, variance and standard deviation. n=122, p= 0.86
Find the mean, variance and standard deviation. n=122, p= 0.86
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07/14/19

You have 5 different video games. How many different ways can you arrange the games side by side on a​ shelf?
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07/14/19

sin(x)=-0.7 In degrees. How do I know which angles to solve for in -180<x<180 and which identity -180-x or 180-x for the second angle. Thanks
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07/14/19

In triangle ABC,mA=35°,a=12, and b=14. Find "c" to the nearest tenth.

A 22.3B. 27.2C. 20.4D. 26.2
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07/13/19

How do I determine if *exactly* one boolean is true, without type conversion?
Given an arbitrary list of booleans, what is the most elegant way of determining that *exactly* one of them is true? The most obvious hack is type conversion: converting them to `0` for `false`... more
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07/13/19

Please help me to answer and understand this question
Question-- What happens if we graph both f and f – 1 on the same set of axes, using the x-axis for the input to both f and f – 1? [Suggestion: go to desmos/calculator and type y = x3 {-2 < x... more
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07/13/19

Centre (1,2), radius 5
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07/13/19

help me please!!!
The points obtained by students of a class in a test are normally distributed with a mean of 60 points and a standard deviation of 5 points.About what percent of students have scored less than 45... more
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07/13/19

Determine the following...
Given: a= -cis (π/6) and b= 1/2cis (-π/3)Determine: ab a/b a2 b6
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07/13/19

Determine without the use of a calculator

sin( arctan(-(2/3)1/2) + arccos(-2/51/2) )
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07/13/19

The variable of z

The variable z is directly proportional to x, and inversely proportional to Y. When x is 9 and Y is 13, z has the value of 4.1538461538462. What is the value of z when x=16 and Y=21round to at... more
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07/13/19

The variable of z
The variable z is directly proportional to x, and inversely proportional to Y. When x is 3 and Y is 6, z has the value 9.5. What is the value of z when x=8 and Y=12round to at least the thousandths... more
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07/13/19

Sigma summation notation to rewrite this sum, Check
Can someone tell me if I did this correctly? Given: (9/16)+(3/8)+(1/4)+(1/6)+(1/9)+(2/27)I know that the common ratio is 2/3 and an=a1rn-1So, n∑ i=(9*2n-1)/(16*3n-1)i=9/16
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07/13/19

What is the exponential function y=Ce^kt that passes through two given points?
Find the exponential function y = Cekt that passes through the two given points.Given points: (4,5) and (3,1/2)
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07/13/19

Most succinct way to determine if a variable equals a value from a 'list' of values?
If I have a variable in C# that needs to be checked to determine if it is equal to one of a set of variables, what is the best way to do this? I'm not looking for a solution that stores the set in... more
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C++

07/12/19

What is the most effective way for float and double comparison?
What would be the most efficient way to compare two `double` or two `float` values? Simply doing this is not correct: bool CompareDoubles1 (double A, double B) { return A == B; } But... more
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07/12/19

How to efficiently determine if a set of points contains two that are close?
I need to determine if a set of points (each given by a tuple of floats, each of which is in [0, 1]) contains two that are within some threshold, say 0.01, of each other. I should also mention that... more
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07/12/19

I would like to be able to compare values in one CSV with a nominal set of values in another?
I have been given the task of injecting faults into a system and finding deviations from a norm. These deviations will serve as the failures of the system. So far we've had to detect these faults... more
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07/12/19

What is the difference between a discrete and a continuous environment?
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