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Tutors Answer Your Questions about Vectors (FREE)
Question 199657: Differentiate each function. Express all final answering simplified factored form, positive exponents, and with radical notation where possible.
a) y=log_7(4x^2+2)^4
b) f(t)=-3t^(2pi-1)
c) y=x^(√x)
d) y=(3x^7)e^(7x)
e) y=(3x)^(2x)
f) y=(cosx)/(4+sinx)
g) y=In(x^3+e^x)
Click here to see answer by vleith(1977)   |
Question 199655: The polynomial function f(x)=(0.001x^3)-(0.12x^2)+3.6x+10, 0≤x≤75, models the shape of a roller coaster track, where f is the vertical displacement of the track and x is the horizontal displacement of the track. Both displacements are in meters. Determine the absolute maximum and minimum heights along this stretch of track.
Click here to see answer by ankor@dixie-net.com(6693)  |
Question 203575: I am in summer school and i was wondering how you would do this problem..
The directions are to simplify:
(xy^7)(x^4y)/(x^5y^2)^2
and how would i add this equation:
x-3/x^2+7x+12 + x-5/x^2-16
please and thank you in advance!
Click here to see answer by stanbon(26284) |
Question 204887: Hi all, Im still having trouble with these vector problems, I cant solve the problems listed below for the following:
Let ~u = 3~i - ~j - 2~k and ~v = 2~i + ~j + ~k.(Again, the ~ symbols mean that there is and arrow symbol above the value in the positive direction)
I need to:
a) Find the corresponding unit vectors for ~u and ~v
b) Calculate the dot product of the angle between ~u and ~v.
Some help with steps and explanations on how to solve would be great.
Thanks, -Nick.
Click here to see answer by Alan3354(6090)  |
Question 205201: Hi all, I dont quite understand what this questions is asking:
Determine whether the following functions y = xsin3x,  ,  ,  are even, odd or none of these.
Can anyone help me with solving it and explain how to do it please?
Thanks, -Nick.
Click here to see answer by Edwin McCravy(2922) |
Question 205587: Hi all, I am still struggling a bit with this vectors stuff, hopefully I willahve it sorted after learning how to solve the following:
I need to calculate 2~u + ~v - 5~w, if ~u = 3~i + 2~j - 7~k, ~v = 5~i - 2~j + 4~k and ~w = 3~i + 2~j - 4~k.
(Agian the ~ symbols refer to arrows in the positive direction above the values shown)
Thnaks, -nick.
Click here to see answer by Alan3354(6090) |
Question 205585: Hi all, I cant seem to get this next problem sorted. I need to find the direction cosines of the vector:
~w = 2~i - ~j + 5~k.
(Again, the ~ symbols refer to arrows in the positive direction above each value, with ~ in-between referring to the arrow being above both values together)
Any help with notes would be really good.
Thanks, -Nick.
Click here to see answer by Alan3354(6090) |
Question 206221: Hi all, can anyone please show me how to do the following question?
Determine whetherher the following line [(x-3)/5] = [(y+1/-2] = [(x-3)/4] contains the point (3, -1, 1).
Steps and notes on how to solve would be really helpful.
Thanks, -nick
Click here to see answer by Alan3354(6090) |
Question 206220: Hi all, I was hoping someone could help me answer the followingl; I need to show that the lines:
[(x-2)/5] = [(y+3)/-3] = [(x-5)/2] and [(x-3)/4] = [(y-2)/6] = [(z-10)/-1] are orthagonal.
Im not sure how to do this so some help with steps and explanations would most appreciated.
Thanks, -nick
Click here to see answer by Alan3354(6090) |
Question 206411: Hi all, I am still having trouble with the following problem.
An object travels which velocity (3,1,2)
a) What is the speed of the object?
b) The object slows to speed 2 without changing direction. Give its velocity vector.
Thanks, -Nick.
Click here to see answer by Alan3354(6090) |
Question 210653: Hi I am having trouble with the following problem.
Determine whether the following two planes 4x+y-z=3 and 2x-5y+3z=2 are parallel, orthogonal, coincident (that is, the same) or none of these?
Help with this would be much appreciated.
Thanks, Judy
Click here to see answer by Alan3354(6090) |
Question 210652: Hi I am having trouble with the following problem.
Determine whether the following two planes 4x+y-z=3 and 2x-5y+3z=2 are parallel, orthogonal, coincident (that is, the same) or none of these?
Help with this would be much appreciated.
Thanks, Judy
Click here to see answer by DRichardson(63)  |
Question 212412: please could someone help me with this question?
A tea connoisseur has a collection of teapots that are scaled versions of the same design. The one-cup teapot is 10cm high. Choose the TWO options that are true statements.
A The two-cup teapot is 20cm high
B The eight-cup teapot is 20cm high.
C The nine-cup teapot is 30cm high.
D The 25cm high teapot is appropriate to make 20 cups of tea.
E The 16cm teapot is appropriate to make 4 cups of tea.
Thank you very much
Dawn
Click here to see answer by vleith(1977) |
Question 212712: Wrongly called for a foul, an angry basketball player throws the ball straight down to the floor. If the ball bounces straight up and returns to the floor 2.7 after first striking it, what was the ball's greatest height above the floor?
Click here to see answer by Alan3354(6090) |
Question 220585: My algebra 2 review sheet has problems and there directed as. Add, Subtract or Multiply as indicated
this is one of the problems
1.(9x3-4+x2+8)-(7x3-3x+7)
The x's in in the first equation is x to the qubed and x squared, on the second equation 7x, that suppose to be qubed too.
sorry this maybe confusing and im soooo sorry! i just dont understand.
Click here to see answer by ankor@dixie-net.com(6693) |
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