Trqbwa mi Speshhhhno pomosht po matematika !!!!!!

[DanielaNeeDhelP]

:smt025 8-[ 8-[ 8-[ 1. (1/3)^-3 : (2/3)^-2 + (3/2)^-3:3^-3:2^-2

2. 1-2x :x+2 < 0 1-3x : x+3 <_0

3. 3\/40 + 6\/25

4. x^2 -3x+2 <_0

5. x^2 - 3x + 2 <_0

6. 1-2x :x+2 < 0

7. ABC triygylnik a=10 c=6\/2 beta=135*

8. ABC : AB=3sm AC=7sm ma=91/2 Da se nameri S= ?!

9. (fynkciq) y= x^2 -6x+5
10. x^4 +3 x^2 +3 >0


: - drobna cherta ; \/ koren ; ^-stepen 8-[ 8-[

[Chacho]

1. (1/3)^-3 : (2/3)^-2 + (3/2)^-3:3^-3:2^-2 = 3

[DanielaNeeDhelP]

TRqbwa mi pomosht na izpit sm mnogo skoro !!
RAzchitam na was :) :)

1) Postroi grafika na Fynkciqta. samo reshenieto mi trqbwa :) : a- y=-x^2+2x+3 B) ; y=x^2+2x+4

2) reshete kwadratnoto nerawenstwo : a:x^2-6x-7<0 B: x^2+6x+7>0

3) reshete drobnoto nerawenstwo: 2x+3 / 5-x >=0 B: 1-2x/x+2 <=0

4) presmetnete : a:cos(180*-a).cotg(90*+a) ,ako sin a =1/2
b: sin(180*-1).tg (90*-a) ako cosa = 1/2

5) za ABC sa dadeni ~~: A: AB=5sm AC=6sm i <A=60*. namerete BC ?!?

B: a=10sm,c=6\/2 i beta :135* ...namerete S na ABC !!

D: a=9sm,b=6sm i c= 5 sm .. NAmerete S na ABC !!

F: Okolo ABC e opisana okryjnost t.K .Ako AB=30 sm i <C=45* , namerete R na okyjnostaa!!!

6)) reshete nerawenstwata ::::
A::: x^4-9x^2+20<0
BBBB:::: x^4-5x^2-36>=0


7)AAA::: 1+x/1-x - x-1/x+1 <+12/1-x^2

BBB:::: 1/x+2 - 2/2-x>= 3/x^2-4

Blagodarq wi predwaritelno !!!
:-P :-P :smt039

[ShtrudeL]

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