Roman C.

Calculus Natural Logs Derivative

11/04/15

Calculus + Natural Log + Derivative

Let f(x)= -5ln(6x) I can't figure out how to find the fourth derivative. f'(x)= -5/x f'(4)= ___

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Calculus Critical Values

11/04/15

Calculus + Critical Number

The function f(x)= (6x-3)e5x has one critical number. What is the critical number?

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Calculus Critical Values

11/04/15

Calculus Homework + Finding Critical Numbers

f(x)=x2e6x For this function there are three important intervals: (-∞,A], [A,B], and [B,∞], and [B,∞) where A and B are the critical numbers. Find A: ___ and B: ___

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Chinese Remainder Problem

11/04/15

What are the first 20 solutions to Sun Tsu’s Chinese Remainder problem?

1- What are the first 20 solutions to Sun Tsu’s Chinese Remainder problem? 2- Derive a formula to find all numbers that meet the following conditions:• Divide by 3 the remainder is 1• Divide by 7... more

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Precalculus

11/03/15

Solve using complex number system

x^3+64=0 Solve by completing the square

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Calculus Proof Derivatives

11/03/15

proof for derivative

(f1+f2+f3+...)'=f1'+f2'+f3'+...

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Calculus Precalculus Homework

11/02/15

Calculus question

Suppose that f : [0, 1] −→ [0, 1] is a continuous function. Prove that f has a fixed point in [0, 1], i.e., there is at least one real number x ∈ [0, 1] such that f(x) = x

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Precalculus

10/31/15

Find the area of each triangle.

b=50in, c=75in, C=15degrees

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Statistics Probability

10/30/15

Probability

The number of calls coming to a call center follows a Poison distribution. On average 90 calls arrive every hour on Mondays between 10 am and 11 am. The probability that exactly three calls will... more

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Statistics Probability Probability & Statistics

10/29/15

Statistics question using a normal distribution

The SAT and ACT college entrance exams are taken by thousands of students each year. The scores on the exam for any one year produce a histogram that looks very much like a normal curve. Thus, we... more

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Math Help

10/29/15

Solve the equation

6e(3x+2)=12. Round three decimal places

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Probability Odds

10/29/15

What are the odds you'll roll a 5 and a 6 in one roll with 5 dice?

I know the odds of rolling one 6 in 5 dice is 1-(5/6)^5 divided by (5/6)^5 which is 3/2. But to get the 6 and the 5 would I just do (4/6)^5 instead?

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Algebra 1 Word Problem

10/29/15

WORD PROBLEM. PLEASE HELP.

the sum of the average number of times a man, a woman, and a one-year-old child cry each month is 56.7. a woman cries 3.9 more times than a man. the average number of times a one-year-old cries per... more

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Calculus

10/28/15

Integrate function

Integrate −9h′(6x+y)+9g′(6x−y) to x.

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Circle Geometry Trigonometry

10/25/15

Have I drawn this diagram correctly? Cant Solve it, thanks

A, B and C are three points on the circumference of a circle. The tangent to the circle at A makes an angle (Alpha) with the chord AB. The diameter through A cuts the circle again at D and D is... more

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Math Math Help Advanced Functions

10/21/15

write the equation of rational function with VA: x=1,-1, HA: y=3/2 and x-int: 3,-3

I need the answer asap

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Math Help

10/21/15

Intersection Sets

Left U = {a, b, c, d, e, f, g} and X = {a, c, e, g} and Y = {a, b, c} and Z = {b, c, d, e, f}Find X' intersection symbol Y' a. {d, f} b. {a, c, e, g, b} c. {a, c} d. none of the... more

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Other

10/21/15

FIND THIS LIMIT HELP PLEAASEEE!

limxm-1/xn-1 m,n elements of N x→1 the answer is m/n but i have no idea how to start or solve this!

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Precalculus

10/21/15

Graphing ellipses

Find the vertices, foci, center, lengths of major and minor axes, for each ellipse with the equation given below. Also graph each ellipse x^2/16+y^2/36=1 4x^2+25y^2=100 (x+3)^2/5 +... more

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Precalculus

10/21/15

Changing to standard ellipse form

change the equation below to standard form of an ellipse what conic does this represent? identify all the elements necessary to graph y. 4x^2+9y^2-8x+36y+4=0 and graph it

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Linear Equations And Inequality Equations

10/18/15