Odpowiedź :
a)45:15=3kg
45:9=5kg
45:10=4,5kg
b)xy=45
y=45/x
2.a f(x)=1/x
b)f(-1)=-1
f(2)=1/2
f(-2)=-1/2
f(1/2)=2
c)1/x=1/3
x=3
1/x=3/4
3x=4
x=4/3
1/x=2
x=1/2
1/x=1
x=1
1/x=4/3
x=3/4
1/x=0,1
x=10
1/x=0,0001
x=10000
45:9=5kg
45:10=4,5kg
b)xy=45
y=45/x
2.a f(x)=1/x
b)f(-1)=-1
f(2)=1/2
f(-2)=-1/2
f(1/2)=2
c)1/x=1/3
x=3
1/x=3/4
3x=4
x=4/3
1/x=2
x=1/2
1/x=1
x=1
1/x=4/3
x=3/4
1/x=0,1
x=10
1/x=0,0001
x=10000
zad.1
a)
45:15 = 3(kg)
45:9 = 5(kg)
45:10 = 4,5(kg)
b)
x*y=45 /:x
y=45/x
zad. 2
a) f(x)=1/x
b)
f(1)=1
f(2)=½
f(-2)=-½
f(-1)=-1
f(½)=2
f(¼)=4
f(4)=¼
c)
1/x=⅓
x=3
1/x=¾
3x=4
x=4/3=1⅓
1/x=2
x=½
1/x=1
x=1
1/x=4/3
x=¾
1/x=0,1
x=10
1/x=0,0001
x=10000
a)
45:15 = 3(kg)
45:9 = 5(kg)
45:10 = 4,5(kg)
b)
x*y=45 /:x
y=45/x
zad. 2
a) f(x)=1/x
b)
f(1)=1
f(2)=½
f(-2)=-½
f(-1)=-1
f(½)=2
f(¼)=4
f(4)=¼
c)
1/x=⅓
x=3
1/x=¾
3x=4
x=4/3=1⅓
1/x=2
x=½
1/x=1
x=1
1/x=4/3
x=¾
1/x=0,1
x=10
1/x=0,0001
x=10000