07/28/21

Jacob ⊕ Jackie ≡ Jacobians Galore
Sketch the the region D bounded by the curves y= 2 / x ,y = 1 / (2x) , y = 2x and y = x/ 2 in the first quadrant of the x y - plane. Let F be the map u = x y and v = y / x from the x y - plane to u... more
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07/26/21

Math word problem

A researcher orders a broth of 8.8% glucose for her lab. However, she needs a stronger broth, one that is 13.8% glucose. Fortunately, she has 69.7 liters of 39.4% glucose broth in the stock room.... more
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07/25/21

It looks difficult but is it ?
Let ƒ be continuous on [0,1] and let Ω be the triangular region in the xy- plane withvertices (0,0) , (1,0) , and (0,1).Show that ∫∫Ωƒ(x+y) dA = ∫ 01uƒ(u )d u
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07/25/21

Failure of drugs during development is due to many reasons, such as Poor biopharmaceutical properties =40%, Lack of efficacy =30% and Toxicity =45%. So what is the percentage of drugs that fail
Failure of drugs during development is due to many reasons, such as Poor biopharmaceutical properties =40%, Lack of efficacy =30% and Toxicity =45%. So what is the percentage of drugs that fail
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07/24/21

Precalculus homework

Find a possible formula for the trigonometric function whose values are in the following table.x 0 4 8 12 16 20 24y 3 -1 -5 -1 3 -1 -5'y=
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07/23/21

Thetwovectors 𝑢⎯⎯=⟨−1,2,2⟩ u ¯ = ⟨−1 ,2 , 2⟩ and 𝑣⎯-=⟨−3,−3,2⟩ v ¯ = ⟨ − 3 , − 3 , 2 ⟩ determine a plane in space. Mark vectors below asT if the vector lies in same plane as 𝑢⎯⎯⎯u ¯ and 𝑣⎯⎯⎯ v ¯

<2,2,3> <9,9,-6> <-1,2,0> <-5,-8,2>
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07/23/21

volume of the solid formed by the revolving region

volume of the solid formed by the revolving region bounded by:y=√4-x2, x=0, y=0 about the y axis
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07/20/21

Which of the following vectors is perpendicular to 𝑎=(1,2,3) a = ( 1 , 2 , 3 ) and 𝑏=(1,−1,2) b = ( 1 , − 1 , 2 ) ?
which of the following is perpendicualr to said vector
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07/19/21

The area of a rectangle is represented by the expression 2x^2 - 3x - 20in^2. I have to find the dimensions of the rectangle, include units, and leave my answers as binomials.
If you can, please thoroughly explain what you are doing step by step, because I don't know how to do this problem. Thank you so much.
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07/18/21

Probability of an event
The grades of a freshman college class, obtained after the first year of college, were analyzed. Seventy percent of the students in the top quarter of the college class had graduated in the upper... more
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07/17/21

find the number of terms please help
For the series below calculate find the number of terms n that must be added in order to find the sum to the indicated accuracy.∞∑n=1 (−1)^n(2) / n^0.8)|error| < 0.01
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07/17/21

How would I use the De.M Theorem to find the power given below?
[ 3 ( cos 3π/8 + i sin 3π/8 ) ] 4how also, would I write this in rectangular form? Using the DeMoivre’s Theorem Thank you.
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07/17/21

Find tan ( u/2 ) if cot u = 1.878

and u is in Quadrant-III.what is tan(u/2)=?
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07/16/21

Proving trigonomic expressions

I need help solving this :1. Prove the following trigonometric identities. (Neatly show all your work/proof steps.) [2x5=10 marks]a) [(sin 2x) / (1+ cos 2x)] . [cos x / (1+ cos x)] = tan (x/2) b)... more
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07/16/21

Application of Integration: Plane Area
Show your mathematical maturity by giving COMPLETE complete solution to each of thefollowing items.1. Determine the area bounded by the curves y = 6x − x2 and y = x2 − 2x.2. Determine the tangent... more
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07/16/21

Exponential & Log Functions
clearly explain, using correct mathematical terminology and graph transformations, the difference(s) between the graph of y = log5𝑥 and y = log5 (125𝑥2). 
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07/16/21

concave up or concave down.
Consider the function f(x)=2x+8/5x+2. For this function there are two important intervals: (−∞,A) and (A,∞) where the function is not defined at .Find    For each of the following intervals, tell... more
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07/15/21

Calculus double integral
A cylindral drill with radius 2 cm is used to bore a hole through the center of a sphere with radius 7 cm. Find the volume of the ring-shaped solid that remains.
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07/14/21

if there are 5 classes and each class have 30 students what is the probabity that if we select 2 students and that 2 students are from the same class?
Kindly solve this problem. Thank you
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07/14/21

how to find if the determine is a saddle point, minima, or maxima?
i have a 3 by 3 hessian matrix, how do i ssolve for the determinant and identify if it is a saddle point , minima or maxima
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07/13/21

Graph Theory/ Maximum Likelihood/ Probability
Suppose we draw n independent random reals x in the range 0≤x≥∞ from the (properly normalized) exponential probability density P(x)=µe-µx.a) Write down the likelihood (i.e. the probability density)... more
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07/13/21

Permutation and Combination
A work crew for a building project is to be made up of 2 craftsmen and 4 laborers selected from a total of 5 craftsmen and 6 laborers. a. How many different combinations are possible? b. The... more
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07/12/21

What would the decay constant be ?

A certain radioactive substance with a half- life of 2600 years is used in estimating the age of relics . Part 1: Find the decay constant. Give excat symbolic answer.
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07/12/21

density and mass
A rod with density δ(x)=8+sinx lies on the x-axis between x=0 and x=π. Find the x-value of the center of mass of the rod.Enter the exact answer.x¯⎯⎯=
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07/10/21

stat help please
Born between 1980 and 1990, Generation Next is engaged with technology, and the vast ma-jority is dependent upon it. Suppose that in a survey of 500 female and 500 male students inGeneration Next,... more
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