Oblicz układ równań ;] ( byle jaką metodą ) :), PROSZE O ROZPISANIE , NIE O SAM WYNIK ^^ , tezeba obliczyć " a" oraz "b" ...
[3=-6a+b <--- jeden układ ;]
[1=2a+b
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{6a - b = -3/*(-1)
{-2a -b = -1
{ -6a + b = 3
{ -2a - b = -1
{-8a = 2/:(-8)
{a = - 1/4
{a = - 1/4
{-2a - b = -1
{a = - 1/4
{-2 * (- 1/4) -b = -1
{a = - 1/4
{1/2 - b = -1
{a = - 1/4 <-- Wynik.
{b = -1 1/2 <-- Wynik. Jak cos b = minus jedna cała i jedna druga
[3 = -6a + b | *(-1)
[1 = 2a + b
[-3 = 6a - b | *(-1)
[1 = 2a + b
___________________
-2 = 8a | :8
a = - 2/8 = - 1/4
1 = 2 * (-1/4) + b
1 = 1/2 + b
1 - 1/2 = b
1/2 =b
ODPOWIEDŹ
[a= -1/4
[b= 1/2