Quiz

Dot Product Quiz

Gelöschter Nutzer 9 Fragen Aktualisiert am 4 Dez 2019

Quiz starten

Dieses Quiz enthält Fragetypen, die sich im gewohnten Player öffnen.

Fragen in diesem Quiz (9)

1Select the expressions which are meaningful. Do not select the expressions which are meaningless and incorrect.
1. A(a dot b) dot c
2. B|a|(b dot c)
3. Ca*b + c
4. D(a*b)c
5. Ea*(b+c)
6. F|a|dot(b+c)
2a dot b of <4,1, 1/4> and <6,-3,-8> is 19.
1. ARichtig
2. BFalsch
3a dot b of: a=2i+j, b=i-j+k is 2.
1. ARichtig
2. BFalsch
4Find the angle between the vectors. a = <3,-1,5>, b=<-2,4,3>. Ans: [blank_start]81[blank_end] degrees
1. A81
5Find the three angles of the triangle with the given vertices.
P(2,0), Q(0,3), R(3,4)
Ans:
p= [blank_start]48[blank_end] degrees
q= [blank_start]75[blank_end] degrees
r= [blank_start]57[blank_end] degrees
1. A48
2. B75
3. C57
6Determine whether the vectors are orthogonal, parallel, or neither.
a=<-5,3,7> , b=<6,-8,2>
1. AOrthogonal
2. BParallel
3. CNeither
7Determine whether the vectors are orthogonal, parallel, or neither.
a = <4,6>, b=<-3,2>
1. AOrthogonal
2. BParallel
3. CNeither
8Find the angles between the curves at their points of intersection.
y=x^2
y=x^3
ans: [blank_start]7/(5(sqrt2))[blank_end]
1. A7/(5(sqrt2))
9Find the scalar and vector projections of b onto a.
a=<3,6,-2>, b=<1,2,3>
ans:
comp_a(b)= [blank_start]9/7[blank_end]
proj_a(b) = <[blank_start]27/49, 54,49, -18/49[blank_end]>
1. A9/7
2. B27/49, 54,49, -18/49