PROSZĘ O POMOC :C
1)wyznacz y ze wzoru : K=b(x+y+z)/4
2)Oblicz: pod pierwiastkiem 1 i 17/64*(-2) do drugiej-1,1:2 i 1/5.
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1)wyznacz y ze wzoru :
K=b(x+y+z)/4 /*4
4K = b(x+y+z)
4K=bx + by + bz
4K-bx-bz = by /:b
(4K-bx-bz)/ b = y b≠0
2)Oblicz:
√ 1 i 17/64*(-2) do drugiej-1,1:2 i 1/5=√(81/64) * 4 - 11/10 : 11/5 =
= 9/8 * 4 - 11/10 * 5/11 =
= 9/2 - 1/2 =
= 8/2=
=4