Tutors Answer Your Questions about Linear Algebra (FREE)
Question 7732: The degree three polynomial f(x) with real coefficients and leading
coefficient 1, has 4 and 3 + i among its roots. Express f(x) as a
product of linear and quadratic polynomials with real coefficients.
Click here to see answer by khwang(438)  |
Question 8896: 1; let v be the space of all polynomials over a field F of degree less or equal to 3
let D be a diff. operator from v to v
1; find the matrix A of D with respect to the basis {1,,x,x.x,x.x.x} of v .
Click here to see answer by khwang(438) |
Question 9376: If xy=-3 and x2+ y2=12 then (x-y)2=?
note: the "2" behind the varibles mean squared. and the (x-y)2 means squared.
thanks
Dean
xy=-3
2xy=-6
x2+y2=12
x2+y2-2xy=12-2xy
(x-y)2=12-*-6
(x-y)2=12+12
(x-y)2=24
Click here to see answer by jawaidak(3) |
Question 11165: It's been about 2 years since I have done any math and now I'm taking college algebra but I have forgotten how to do some of the stuff. The main problem I can't figure out at the moment is: a line is vertical and passes through the point (5,2). I know that the line crosses the x-axis on the 5 but I can't figure out the slope or how to put it in the form of y=mx+b.
Click here to see answer by Earlsdon(6294) |
Question 11867: How could I create a slope-intercept form if I am given this information: x int = 3, y int = 2. The only equation I could find to use was y-2 = m(x-3). Is this the correct form to use?
Click here to see answer by Kelsi(2) |
Question 12450: `please help me solve this problem.(Also show me the steps please)
Solve the system using any algebraic method
x + y + 2z =5
x + 2y + z = 8
2x + 3y - z = 1
Thanks for helping me solve this problem.
KAt ''.
Click here to see answer by slksil001(7) |
Question 12549: Hi, I'm having some trouble with the concept of linear operators. I think of them as functions on sets, but still can't imagine actual examples. Given the properties of linear operators, these should be simple ones (though I still haven't come up with answers), so I'm hoping you can give me some ideas to help me grasp the linear operator a bit better. Here we go! 1) I'm looking for a linear operator from V->V such that T^2=0 but T does not =0. Then, 2) Given two linear operators (say, T, U) from V-> V, I'm looking for TU=0 but UT does not =0. The generality of T and U just really throws me off for some reason. Thanks again for your time. I really appreciate it.
Click here to see answer by khwang(438) |
Question 13602: Here is the queston:
how do I set up the equation?
A collection of coins is worth $7.50. There are nickles, dimes and quarters with twice as many dimes as there are nickles. Altogether there are 70 coins. how many nickles, dines, and quarters are in the collection?
Click here to see answer by LilSkittleMd(119) |
Question 14435: I need to find an equation for a line whose points are (3,6) and (5,7). I have found the slope which is 1/2 and know the equation should be in the form of Y= mx + b. But I don't understand how to calculate the value of b. Please help.
Click here to see answer by atif.muhammad(135) |
|
Older solutions: 1..45, 46..90, 91..135, 136..180, 181..225, 226..270, 271..315, 316..360, 361..405, 406..450, 451..495, 496..540, 541..585, 586..630, 631..675, 676..720, 721..765, 766..810, 811..855, 856..900, 901..945, 946..990, 991..1035, 1036..1080, 1081..1125, 1126..1170, 1171..1215, 1216..1260, 1261..1305, 1306..1350, 1351..1395, 1396..1440, 1441..1485, 1486..1530, 1531..1575, 1576..1620, 1621..1665, 1666..1710, 1711..1755, 1756..1800, 1801..1845, 1846..1890, 1891..1935, 1936..1980, 1981..2025, 2026..2070, 2071..2115, 2116..2160, 2161..2205, 2206..2250, 2251..2295, 2296..2340, 2341..2385, 2386..2430, 2431..2475, 2476..2520, 2521..2565, 2566..2610, 2611..2655, 2656..2700, 2701..2745, 2746..2790, 2791..2835, 2836..2880, 2881..2925, 2926..2970, 2971..3015, 3016..3060, 3061..3105, 3106..3150, 3151..3195, 3196..3240, 3241..3285, 3286..3330, 3331..3375, 3376..3420, 3421..3465, 3466..3510, 3511..3555, 3556..3600, 3601..3645, 3646..3690, 3691..3735, 3736..3780, 3781..3825, 3826..3870, 3871..3915, 3916..3960, 3961..4005, 4006..4050, 4051..4095, 4096..4140, 4141..4185, 4186..4230, 4231..4275, 4276..4320, 4321..4365, 4366..4410, 4411..4455, 4456..4500, 4501..4545, 4546..4590, 4591..4635, 4636..4680, 4681..4725, 4726..4770, 4771..4815, 4816..4860, 4861..4905, 4906..4950, 4951..4995, 4996..5040, 5041..5085, 5086..5130, 5131..5175, 5176..5220, 5221..5265, 5266..5310, 5311..5355, 5356..5400, 5401..5445, 5446..5490, 5491..5535, 5536..5580, 5581..5625, 5626..5670, 5671..5715, 5716..5760
|
