Question

1.Oblicz:

a) -3,6+2 i 3/7 - 1,4 - (- 11/7)=

b) -5,75 + 4 i 2/3 - 2 i 1/4 - (- 3 i 1/3)

2.Oblicz:

a) -1-(0,99999)=

b) 100000-(-9999)=

c) -1-999,999=

d) 999,999 - 10000=

3.Uzupełnij:

a)1/99- ...... = -1

b)1+ ...... =-37/73

c) -0,111- ..... = -1

Answer 1

1: a)-252/70+170/70-98/70+110/70= -82/70-208/70=-290/70=-29/7 b)-3450/60+280/60-105/60+200/60=-3170/60-305/60=-3475/60 2: a)-1,99999 b)109999 c)-1999,999 d)9000,001 3: a)1/99-100/99 =-1 b)1+(-36/73) =37/73 c)-0,111-0,999=-1

Answer 2

a. -3,6+2i3/7-1,4-(-1i1/7) = -3,6+2,4-1,4+1,14 = - 5 + 3,54 =  -1,46

b. -5,75+4i2/3-2i1/4-(-3i1/3)= -5,75+4,7-2,25+3,3= 0

 

lub

-3i6/10+2i3/7-1i4/10-(-1i1/7) = -3i42/70+2i30/70-1i 28/70+1 i 10/70 = -4i70/70 + 3 i 40/70 = -1 i30/70 = -1 i 3/7

-5 i 3/4 +4 i2/3 -2 i 1/4 - (-3 i 1/3) = -5 i 9/12+4 i 8/12 - 2 i 3/12 + 3 i 4/12 =

=  - 7 i 12/12 + 7 i 12/12 = - 8 + 8 = 0

2.

a. -1 -0,99999= -1,99999

b. 100000-(-9999)= 109999

c. -1 - 999,999 = -1999,999

d. 999,999 - 10000= -9000,001

 

3.

a. 1/99 - 1 i 1/ 99 =  -1

b. 1 + (-1 i 37/73) = - 37/73

c. - 0,111-0,889 = - 1