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Integrals

Alberti Cipher Disk and Enigma Cipher

Why did the Alberti Cipher disk have numbers on it? Describe how the disk was used. What made it secure? What was the impact of this disk on cryptology? How does enciphering and deciphering differ on the Enigma? What weakness in the Enigma did the Poles use to break Enigma ciphers?

Find the volume below the surface z

Please see attached sheet for full equations. Find the volume below the surface z and above the subdomain D of the positive quadrant , bounded by the curves and y=z+2.

Integration Problem

Please see the attached file for the fully formatted problems. Evaluate the integration of x squared times the square root of x + 1

Laplace : Relating Transform of a Function and Transform of the Derivative

Please see the attached file for the fully formatted problems. Problem statement: What really makes Laplace transforms work for differential equations is the relationship between the transform of a function and the transform of the derivative of that function. Therefore, the formula you will prove below is key to all that

Integral Domains Fields and Subfields

Problem: Note: Q is rational numbers, R is real numbers , sqrt() means square root Show that Q(sqrt(2)) is the smallest subfield of R that contains sqrt(2).

Representation of the Dirac Delta Function

Please see the attached file for the fully formatted problems. Show that is a representation of the Dirac S-function. Discussion: Let and let f(x) be a function which is piecewise continuous on [?a, a], in particular, (Dirac delta function) one must show that One way of doing this is to follow the approach u

Integrating Periodic Functions

Please see the attached file for the fully formatted problems. Suppose that f(x + 2pi) = f(x) is an integrable functionof period 2pi. Show that S f(x) dx 2pi + a ---> a = S f(x) dx 2pi ----> 0 where a is any real number.

Integration By Trigonometric Substitution: Solving Trickier Problems?

Hello! I'm having trouble using Trigonometric Substitution to find the anti-derivative of non-simple integrands. For details on my situation, please consult my missive, which I've included as an attachment in MS Word '95 (WordPad compatible) and Adobe PDF (ver 3+) files. (The files contain identical information; if you can re

Curve Sketching, Integration, Stationary Points and Asymptotes

Please see the attachment for the full question. I require full, detailed, step by step workings for all sections of this problem Coursework 2 Question 2 a) For the curve with the equation y = x^3 + 3x^2 - 2 i) Find the position and nature of any stationary points. ii) Make up tables of signs for y, y' and y''. Us

Curve Sketching, Integration, Stationary Points and Asymptotes

Please see question attached. I require full detailed, step by step solutions to each section of this question. Coursework 2 Question 1 a) For the curve with equation: S 4x/(x^2 + 1) dx i) Find the position and nature of any stationary points. ii) Determine whether the function is even, odd (or neither), and fi

Multivariable Calculus : Iterated Integral

( f ^n_r means that n is on the top of the f and r is on the bottom) Evaluate the iterated integral: f ^(pi/2)_0 f ^(pi/2)_0 cos x sin y dy dx f: is the integral symbol

Multivariable Calculus: Triple Integral - Cylindrical Coordinates

Question: Solve by triple integration in cylindrical coordinates. Assume that each solid has unit density unless another density function is specified: Find the volume of the region bounded above by the spherical surface x^2 + y^2 + z^2 = 2 and below by the paraboloid z = x^2 + y^2.

Multivariable Calculus : Triple Integral

Compute the value of the triple integral   _T f(x, y, z) dV: f(x, y, z) = xyz; T lies below the surface z = 1 - x^2 and above the rectangle -1*x*1, 0*y*2 in the xy-plane. : is the integral symbol

Multivariable Calculus : Integral

Please show all work; don't explain each step. Please DON'T submit back as an attachment.Thank you. (  ^n_r means that n is on the top of the  and r is on the bottom) Sketch the region of integration, reverse the order of integration, and evaluate the resulting integral:  ^1_0  ^1_y

Equations

Show that there are exactly four distinct sets of integers which satisfy the attached equations:

Differential Equation

Given dy/dx= -xy/(ln y), where y>0 find the general solution of the differential equation What solution satisfies the condition that y=e^2 when x=0... express in y=f(x) Why is x=2 not in the domain found from that?

General calc problems

20) If the function f is continuous for all real numbers and lim as h approaches 0 of f(a+h) - f(a)/ h = 7 then which statement is true? a) f(a) = 7 b) f is differentiable at x=a. c) f is differentiable for all real numbers. d) f is increasing for x>0. e) f is increasing for all real differentiable ans is B. Explain

Arc Length

Evaluate the integral in the attached file "Arc Length.doc" for arc length (L). The intent is to solve for a numerical answer and the values for a, b, and t are all constant.

Solving an integral

Can you show me the solution to this integral? See attached file for full problem description.

Integral

Can you please show all the working to solve the attached integral?

Transformation

Please see the attached file for full problem description. --- Use a transformation to evaluate the double integral of f(x,y) given by f(x,y)=cos(2x+y)sin(x-2y). over the square region with vertices at (0,0) P(1,-2) Q(3,-1) & R(2,1) (My notes from class-uses substitution, change of variables) Solution. Letting

Double Integral

Can anyone please show me how to solve these double integrals, with a step by step approach. I know the answer is 63 - but Ive tried so many times & I don't know where I'm going wrong. upper limits are 1&y=2 x+4y^2 dydx + lower limits are -2&y=-x upper limits are 4 & y=2 x+4y^2 dydx lower limits ar