### Rotating Hyperbola : Is the Function an Hyperbola?

Is the function c(x)=(x^2+4)/x an hyperbola ? How would you rotate it 45 degrees in an anti clockwise direction ?

Explore BrainMass

- Anthropology
- Art, Music, and Creative Writing
- Biology
- Business
- Chemistry
- Computer Science
- Drama, Film, and Mass Communication
- Earth Sciences
- Economics
- Education
- Engineering
- English Language and Literature
- Gender Studies
- Health Sciences
- History
- International Development
- Languages
- Law
- Mathematics
- Philosophy
- Physics
- Political Science
- Psychology
- Religious Studies
- Social Work
- Sociology
- Statistics

- Mathematics
- /
- Algebra
- /

Is the function c(x)=(x^2+4)/x an hyperbola ? How would you rotate it 45 degrees in an anti clockwise direction ?

Dtermine whether or not the following matrix A= 5 0 2 0 5 0 2 0 5 is diagonalizable. If it is, then determine P'-1(P inverse)AP.

Please solve the following: Sec^2(X)csc^2(X)=sec^2(X)+csc^2(X) Make sure to show all the required steps and work.

Find the solution of the initial value problem: y'' + 2y' + 2y = 0, y(0) = 2, y'(0) = -3

Find the solution of the initial value problem: y'' - 4y' + 3y = 0, y(0) = 2, y'(0) = 3

If A is nonsingular, show that the characteristic values of A^(-1) are the reciprocals of A, and that A and A^(-1) have the same characteristic vectors.

Compute the Wronskian of the given set of functions, then determine whether the function is linearly dependent or linearly independent: x^2 - x, x^2 + x, x^2, all x

Show that the set of all elements of R^3 of the form (a + b, -a, 2b), where a and b are any real numbers, is a subspace of R^3. Show that the geometric interpretation of this subspace is a plane and find its equation.

Note: C means set containment (not proper set containment), |G : K| means index of subgroup K in G, and G # K means K is a normal subgroup of G question: Let K C H C G be groups, where K # G and |G : K| is finite. Show that |G/K : H/K| is also finite and that |G/K : H/K|=|G : H|

Please see the attached file for the fully formatted problems. What is the rank and signature of the quadratic form −x2+4y2−2z2+4xy+4xz?

Let Tn = (tij) denote the nxn matrix such that for each index i, tji = a and tij = b for j not = to i. Verify that Tn = (a-b)In + bEn where En is the nxn matrix of all 1's. Find the determinate and the eigenvalues of Tn.

A certain 4x4 real matrix is known to have these properties: 1) Two of the eigenvalues of A are L1= 3 and L2= 2. 2) The number 3 is an eigenvalue of the matrix A + 2I. 3) det. A = 12. What are the other 2 eigenvalues of A and what is the characteristic polynomial of A, At, and A-1?

Problem attached.

Please see the attached file for the fully formatted problems. Use the inverse power method to estimate the eigenvector corresponding to the eigenvalue with smallest absolute value for the matrix -1 -2 -1 A= -2 -4 -3 2 2 1 where X0= [1,1,-1]. In finding A-1 use exact arithmetic with fractions. ln applyi

Let X be a nonempty subset of a group G. If G = <X> and H is a subgroup of G, show that H is the normal subgroup of G if and only if x^-1Hx contained in H for all x belonging to X. ALSO show that <X> is normal in G if and only if gXg^-1 contained in <X> for all g belonging to G.

"C" means set containment (not proper set containment) and "T" means intersection of sets If H and K are subgroups of a group and |H| is prime, show that H C K or H T K = {1}

Let G = RxR (R is the real numbers) with addition (x,y) + (x', y') = (x+x', y+y'). Let H be the line y=mx through the origin: H = {(x,mx)such that x belongs to R (R is real numbers). Show that H is a subgroup of G and describe the cosets H + (a,b) geometrically.

If H is a subgroup of G, define a mapping $ from the right cosets of H to the left cosets by $(Ha) = a^-1H. Show that $ is a (well defined) bijection.

If $:G->G1 is a homomorphism, show that K = the set of g belonging to G given that $(g)=1 is a subgroup of G (called the kernel of $)

Use columnar transposition cipher with keyword: Greek (keep e's in order), to decode the following message: VOESA IVENE MRTNL EANGE WTNIM HTMEE ADLTR NISHO DWOEH

Is there a linear transformation T in R^3 -> R^3 for which: T[2 1 3] = [4 1 9] T[3 1 0] = [9 1 0] T[3 2 3] = [9 4 9]

I have difficulty in determining whether the signals are memoryless or causal. Please see the attached file for full problem description.

The book I am using is "Digital Signal Processing" (Third Edition) by Prokis and Manolakis. It is question 2-45 on page 144. Consider the system described by the difference equation: y(n)=a*y(n-1)+b*x(n) determine b in terms of a so that THE SUMMATION OF h(n)=1 The limits of the summation are

If X is a nonempty subset of a group G, let <X>={x1^(k1),x2^(k2)...xm^(km)|m>=1, xiEX and kiEZ for each i}. a) show that <X> is a subgroup of G that contains x. b) show that <X>C=H for every subgroup H such that XC=H. Thus <X> is the smallest subgroup of G that contains X, and is called the subgroup generated by X. note:

Q.63. For each i,j ≥ 0, define P (i,j) as follows : P (0,0) = 0, and , for (i,j) ≠ (0,0) , P(i,j) is the least integer ≥ 0 that is not equal to P (k,l) for any (k,l) with k < i and l = j , or with k = I and l < j. Find P (2987,6592).

Find the linear velocity of a point on the edge of a drum rotating 52 times per minute. The diameter of the wheel is 16.0in. Please show me all the steps thank you

Let A be a 3x3 matrix such that At=-A(i.e.,A is a skew - symmetric). Find the general solution of the homogeneous equation Ax=0.

Prove that if ; A is a 2x2 matrix then A2-Tr(A)A+Det(A)I=0.

Compute the inverse of the matrix below? 3 -1 -3 6 0 -2 -4 -1 3

Use Cramer's Rule to solve the following system of equations. -x+2y = 1 3x+2y -3z= -1 2y -3z = 2