Tutors Answer Your Questions about Linear Algebra (FREE)
Question 370360: I don't know how to solve for t here:
t^3 - 12 t^2 - 45 t + 56
Wolfram Alpha says t=1. It's so obvious, yet how did it get that answer? It doesn't show any steps. This is the question I couldn't get on my final exam. I tried typing it into the equation solver here but it didn't work...
Thanks for your help!
Click here to see answer by Alan3354(69443)   |
Question 370900: Hello,
Could someone help me solve this problem? Thanks in advance.
From a base elevation of 9900ft.a mountain peak in Colorado rises to a summit elevation of 14,498ft. over a horizontal distance of 15,839ft. find the grade of the peak.
Also round to the nearest tenth please
Click here to see answer by rfer(16322) |
Question 371003: i need help with linear programming and determining the maximum and minimums of an unbound function. particularly, given the constraints, i am having a hard time figuring out the points which i will then plug into the given function to determine the max. and min. i understand how to solve bound functions.
Click here to see answer by Fombitz(32388)  |
Question 373530: Hello,
Can someone help me solve this problem, thanks in advance.
An example of a real-life situation that could be modeled by a function is the family wants to go to a local theme park. Tickets are $25 and parking is $10. Example below is the total price for a family is given by where a is the number of people in the family.
P=25a+10 there are 20 family members
Click here to see answer by dianitaa_328(8) |
Question 375625: linda had p cups of peanuts and r cups of raisins when she mixed them the peanuts and raisins made 12 cips of party mix that had twice as many peanuts as rainsins how many cups of peanuts and how many cups of rainsins did she have
how do i write this as an equation of a system of linear algebrA
Click here to see answer by scott8148(6628)  |
Question 375891: you have 3 vectors x1 =[1, 1, 1, 1] x2=[6, 0, 0, 2] x3=[-1, -1, 2, 4]
Use the gram-Schmidt algorithm to convert the set S={x1, x2, x3} into an orthogonal set.
Click here to see answer by Jk22(389)  |
Question 375894: Let U be a subspace of R^4 and let the set S={x1,x2,x3} be an orthogonal basis of U, where x1=[1,0,-1,-1] x2=[2,1,1,1] x3=[-1,3,-1,0]
a) find a basis of U^(orthogonal symbol)
b) Given x=[3,1,0,42] find vectors x1 and x2 such that x= x1+x2, where x1 is in U and x2 is in U^(orthogonal symbol)
Click here to see answer by Jk22(389) |
Question 378113: hello
How do i find the basis of a space spanned by a set of vectors v1 = (1,-2,0,0,3),v2=(2,-5,-3,-2,6),v3=(0,5,15,10,0),v4=(2,6,18,8,6). i tried it out assuming that if the space is spanned by these vectors then any arbitrary vector in R^5 can be found by a linear combination of these vector right? but i got no solution to an arbitrary vector of (3, 2, 4, 5, 6). if that is the case is it safe to say that no basis exists for a space spanned by v1, v2, v3, v4?
thanks for your help
Click here to see answer by Jk22(389) |
Question 378801: let T:R^3 --> R^3
T(x,y,z) = (z, x + y, x + y + z). determine
i) rank T and basis of Im T
ii) nullity T
what i tried:
If t is the matrix that will give you a 1 x 3 image then isn't is safe to conclude that the rank of T is 3? also if im T is the new vector, then the basis of im T is a linear combination of the standard basis vectors of R^3 right? but how do i prove all this mathematically?
Click here to see answer by robertb(5830)  |
|
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
|
