Question # 1

If z=(x,y) then z has no multiplicative inverse when

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x ≠ 0, y = 0

x = 0, y = 0

x = 0, y ≠ 0

None of these

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Free vector

Null vector

Unit vector

None of these

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The law of consines

The law of sines

The law of tangents

None of these

A number A is said to be the A.M between the two numbers a and b if a, A, b are in

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A.M

A.P

G.P

G.M

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[0,1[

[0, 1]

]0, 1[

None of these

If y = 2x , then

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y1 -ln2y = 0

y2-(ln2)2 y = 0

y2-(ln2)y1 = 0

All are correct

Multiplicative inverse of "1" is

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+- 1

0

1

None of these

If y = sin (ax + b), then fourth derivative of y with respect to x =

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a⁴cos (ax + b)

a⁴sin (ax + b)

-a⁴sin (ax + b)

a⁴tan (ax + b)

The set {0,-1} hold closure property under

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Addition

Both a & c

Multiplication

None of these

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c = 0

c = -1

c = -2

c = 1

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