Witam kto pomoże rozwiązać te 4 zadania
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1.A = {0,1,2,3,4,5,6,7}
B = {-4,-3,-2,-1,0,1,2,3,4}
AuB = {-4,-3,-2,-1,0,1,2,3,4,5,6,7}
AnB = {0,1,2,3,4}
A\B = {5,6,7}
B\A = {-4,-3,-2,-1}
2. 132,5 - 100%
151 - x %
132,5x = 15100
x ≈ 113,96
113,96% - 100% = 113,96%
Odp: Wzrosło o 113,99%
3. a) x²-9≠0
więc x≠3 lub x≠-3
D = R \ {-3, 3}
b) x+1 = 0
x₀ = -1
c) f(x)rośnie dla x ∈ (-∞,3) , (3,∞)
4. tgα = 3
sinα = 3cosα
sin²α + cos²α = 1
(3cosα)² + cos²α = 1
9cos²α + cos²α = 1
10cos²α = 1
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1.A = {0,1,2,3,4,5,6,7}
B = {-4,-3,-2,-1,0,1,2,3,4}
AuB = {-4,-3,-2,-1,0,1,2,3,4,5,6,7}
AnB = {0,1,2,3,4}
A\B = {5,6,7}
B\A = {-4,-3,-2,-1}
2. 132,5 - 100%
151 - x %
132,5x = 15100
x ≈ 113,96
113,96% - 100% = 113,96%
Odp: Wzrosło o 113,99%
3. a) x²-9≠0
więc x≠3 lub x≠-3
D = R \ {-3, 3}
b) x+1 = 0
x₀ = -1
c) f(x)rośnie dla x ∈ (-∞,3) , (3,∞)
4. tgα = 3
sinα = 3cosα
sin²α + cos²α = 1
(3cosα)² + cos²α = 1
9cos²α + cos²α = 1
10cos²α = 1
sinα = 3cosα