1.Wiedzac, że oblicz
a)
b)
c)
2. wyznacz x i y oraz oblicz pola:
a) równoległoboku o podstawie i wysokości
b) rombu o przekątnych i
c) trapezu o podstawach i oraz wysokości 10.
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z.1
[ab]/[ab + b²] = 2009/2010
[ab]/[(a + b)*b] = 2009/2010
a/[a +b] = 2009/2010
a = 2009
a +b = 2010 --> b = 2010 - a = 2010 - 2009 = 1
Mamy
a = 2009 oraz b = 1
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a) a/b = 2009/1 = 2009
b) b/[a+b] = 1/2010
c) [a³ + ab]/[ ab ] = a³/[ ab] + 1 = a²/b + 1 = 2009²/1 + 1 =
= 4 036 081 +1 = 4 -36 082
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z.2
a) P = x²* y²
b) P = 0,5 * x² * y³
c) P = 0,5*[x² + y²] *10 = 5 * [x² + y²]
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