- #1
dagg3r
- 67
- 0
1. Find a vector equation for the line that passes through the points
P1 (5,2, -3) and P2 (2, -1, 7 )
how would i do this?
just 5i+2j-3k - (2i -1J + 7k)
3i +3j -10k?
looks a bit simple most likely wrong
2.Find the distance between the plane with equation x + y -4z = -15
and the plane parallel to it, which passes through the point (0, 3 , -4)
what i did i used the equation of the plane x + y -4z = 15
and subed (x=0, y=3, z=-4) and i got d2=-1
now i used the formula
d1-d2 / sqrt(a^2 + b^2 + c^2)
15- -1 / sqrt(18)
= 16 / sqrt(18)
is this how you do it? it just seems like I am doing something wrong heh
3. On the curve x=t^4 + 2t - 1
y= e^-2t
find d^2y/dx^2 at the point where t=-1
how do i approach this? thanks
P1 (5,2, -3) and P2 (2, -1, 7 )
how would i do this?
just 5i+2j-3k - (2i -1J + 7k)
3i +3j -10k?
looks a bit simple most likely wrong
2.Find the distance between the plane with equation x + y -4z = -15
and the plane parallel to it, which passes through the point (0, 3 , -4)
what i did i used the equation of the plane x + y -4z = 15
and subed (x=0, y=3, z=-4) and i got d2=-1
now i used the formula
d1-d2 / sqrt(a^2 + b^2 + c^2)
15- -1 / sqrt(18)
= 16 / sqrt(18)
is this how you do it? it just seems like I am doing something wrong heh
3. On the curve x=t^4 + 2t - 1
y= e^-2t
find d^2y/dx^2 at the point where t=-1
how do i approach this? thanks