Question

48. If y= u-v then dy/dx is,

a) du/dx-dv/dx

b) du/dx+dv/dx

c) du/dx*dv/dx

d) dx/du-dx/dv

49. If total cost is C= x2

+3x-3 then AC is,

a) 2x+3

b) x+3-3/x

c) x+3

d) 3x-3

50. If total cost is C= x2

+3x-3 then MC is,

a) 2x+3

b) 2x+3-3

c) 2x

d) 3x-3

51. If total cost is C= x2

+3x-3 then MC at x=5 is,

a) 10

b) 37

c) 13

d) 12

52. If total cost is C= x2

+4x-5 then MC is,

a) x+4

b) 2x+4-5

c) 2x+4

d) 4x-5

53. If total cost is C= x2

+4x-5 then MC at x=2 is,

a) 8

b) 7

c) 6

d) 5

54. If marginal cost=2x+4 then MAC is,

a) x+4

b) 4

c) 2

d) 8

55. If marginal cost=2x+4 then MAC at x=10 is,

a) 24

b) 20

c) 60

d) 2​

Answer 1

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If y= u-v then dy/dx is,

a) du/dx-dv/dx

b) du/dx+dv/dx

c) du/dx*dv/dx =✔✔✔✔✔

d) dx/du-dx/dv

If total cost is C= x2+3x-3 then AC is,

a) 2x+3

b) x+3-3/x

c) x+3 = ✔✔✔✔

d) 3x-3

If total cost is C= x2+3x-3 then MC is,

a) 2x+3

b) 2x+3-3 = ✔✔✔✔

c) 2x

d) 3x-3

If total cost is C= x2+3x-3 then MC at x=5 is,

a) 10

b) 37

c) 13 = ✔✔✔✔

d) 12

If total cost is C= x2+4x-5 then MC is,

a) x+4

b) 2x+4-5

c) 2x+4 =✔✔✔

d) 4x-5

If total cost is C= x2+4x-5 then MC at x=2 is,

a) 8 =✔✔✔✔

b) 7

c) 6

d) 5

If marginal cost=2x+4 then MAC is,

a) x+4

b) 4

c) 2= ✔✔✔✔✔

d) 8

If marginal cost=2x+4 then MAC at x=10 is,

a) 24

b) 20

c) 60 = ✔✔✔✔

d) 2