Test

Dot Product Quiz

Usuario eliminado 9 preguntas Actualizado el 4 dic 2019

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Este test tiene tipos de pregunta que se abren en el reproductor de siempre.

Preguntas del test (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. AVerdadero
2. BFalso
3a dot b of: a=2i+j, b=i-j+k is 2.
1. AVerdadero
2. BFalso
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