SEMESTER SPRING 2020

MATHEMATICAL ECONOMICS (ECO406)

ASSIGNMENT

DUE DATE: 11TH JUNE, 2020

MARKS: 15

Question no. 1

Which among the followings are identities and which are equations, and

why?

I. 4(x-1) +1=x-3(1-x)

II. x(x-1) =x(x-2) +6

(Marks: 2)

Question no.2

Solve the following equation by factorizing method and find the values of

X.

2X2

-4X-30=0

(Marks: 5)

Question no.3

Solve the following equation and find the value of unknown(x).

6 2 2 3

5 37 5 2

x x

x x

(Marks: 5)

Question no.4

Calculate the future value (Pt) of a principal or present amount (Po) i.e. Rs.

450 at 14% interest rate, three years from now when compounded annually.

(Marks: 3)

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Question no. 1

Which among the followings are identities and which are equations, and

why?

I. 4(x-1) +1=x-3(1-x)

II. x(x-1) =x(x-2) +6

(Marks: 2)

4( x-1)+1=x-3(1-x)

=4x-4+1 =x-3+3x

=4x-3 =4x-3 This is identity.

2.x(x-1) x(x-2)+6

This is equation.

Question no.2

Solve the following equation by factorizing method and find the values of

X.

2X2

-4X-30=0

(Marks: 5)

2×2-4x=0

2-4x=0

4x=-2

x=-2/-4

x=1/2

Question no.4

Calculate the future value (Pt) of a principal or present amount (Po) i.e. Rs.

450 at 14% interest rate, three years from now when compounded annually.

(Marks: 3)

Solution Idea