Aritmetika 08-09 Sol

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GGZZ MATEMATIKA I BATXILERGOA: MATEMATIKA GIZARTE ZIENTZIEI APLIKATUA 1.EBALUAKETA: ARITMETIKA IZEN-ABIZENAK:…………………………………………………………………… TALDEA: …………………. DATA: ....................... EGIN ONDOKO ERAGIKETAK: 1) [ 5 + ( − 3) ⋅ 2 : ( − 6) − ( − 4 ) ] ⋅ [ 2 + ( − 2 ) ⋅ 5 − 5 ⋅ 3] =

2)

2 1  1  −  2 −  + 1  3 2  6  = 5 1+ 3 1+ 2

3)

( a b ) ⋅ ( − a ) ⋅ (b ) ( − b ⋅ a ) ⋅ [( − ba ) ]



2

2

−1 3

−1 −5

2 3

−1 0

−4 3 −2

(0,5 ptu)

(0,75 ptu)

=

(0,75 ptu)

4)Sinplifikatu ahalik eta gehien ondorengo adierazpenak: (1,5) 3 3 3 3 a) 3 16 − 2 250 + 5 54 − 4 2 =

GGZZ MATEMATIKA I

3

b)

32 ⋅ 15

( 8) 5

16

2

=

5)Arrazionalizatu eta sinplifikatu ondorengo ekuazioak: a)

4 2

b)

3 5

3

c)

2

(1 ptu)

6 5− 3

6)Ebatzi dagokion prozedura erabiliz (kalkulagailu barik): (1,5 ptu) 2

1 log 5125 − log 3   + log 6 7 36 + log8 1 =  81 

GGZZ MATEMATIKA I

7)Bilatu x-aren balioa kasu bakoitzean: ( 1,5 ptu) a ) log x 243 = 5

b) log x 2 =

1 2

c) log 5 0,2 = x

d) log2 32 - log3 27 = log x

8)

kalkulatu

eta

direla jakinik,

(1,5 ptu)

GGZZ MATEMATIKA I

9) Adierazi, tarte eran, ondokoa egiaztatzen duten zenbakiak: x+4 ≥ 2

(1 ptu)

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