Х=0,5+1,5у =>х=0.5+1.5(1)=2
3(0,5+1,5у)-4у=2=>1.5+4.5у-4у-2=0=>
=>0.5у=0.5=>у=1
ответ:(2;1)
F'(x)=(x^4)*sinx +x^4*(sinx )'=4x^3*sinx +x^4*cosx
-14х=7
х=7/(-14)
х=-1/2
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1.
54: 2, 3, 3, 3.
65: 5, 13.
99: 11, 3, 3.
162: 2, 3, 3, 3, 3.
10000: 2, 5, 5, 5, 5, 2, 2, 2.
2.
1500: 5, 5, 5, 3, 2,2.
7000: 5, 5, 5, 2, 2, 7, 2.
3240: 5, 2, 2, 2, 3, 3, 3, 3.
4608: 2, 2, 2, 2, 2, 2, 2, 2, 2, 3, 3.
20-20х-120=420
-20х=420-20+120
-20х=520
х=520/-20
х=-26