Math Quiz

Find the magnitude of the cross product of vector (UXV) for U=2i+4j+5k V=4i+3j

• 125

• 35

• 15

• 25

• none

The image of the circle x2+y2-x+2y=0 when it is reflected about the line L is x2+y2-2x+y=0 then what is the equation of the line?

• y=2x+1

• y=x

• y=-x

• Y=x+1

What is the maximum value of z=2x+3y subjected to the constraints x+y≤62x-y≤6x≥0y≥0

• 14

• 22

• 12

• 18

Find the image of the circle x2+y2=4 after reflection in the line y=2x+1

• (x+45)2 +(y+25)2=4

• (x-45)2 +(y+25)2=4

• (x+45)2 +(y-25)2=4

• (x-45)2 +(y-25)2=4

• none

If u = (4, 0) and v=(3, 3x) then find the dot product of u . v ?

• 4

• 1

• 3

• 12

Find the image of the circle (x+4)2+(y-6)2=9 when it is rotated through θ=π about(-7,-3)

• (x-4)2+(y-6)2=9

• (x+4)2+(y+6)2=9

• (x+10)2+(y+12)2=9

• None

Find the slope of the tangent to the curve 5x2+7 at x=1.5

• 15

• 1

• 0.5

• NNone