2y dy = x dx
∫2y dy = ∫x dx
y² = ½*x² + C
2² = ½*(-1)² +C
4=½ +C
C=4-½
C=3½
y² = ½*x² + 3½ (umnojim na 2)
2y² = x² + 7
1) 234*7/9=182
2)2/3*234=36
3)234÷36= 6 5/10 ←скорость в гору
К 20
1/2=10/20
1/4=5/20
1/5=4/20
1/10=2/20
К 36
5/12=15/36
4/9=16/36
5/6=25/36
3/4=27/36
К 60
7/30=14/60
9/20=27/60
11/15=44/60
7/12=35/60
К 100
2/5=40/100
3/4=75/100
8/25=32/100
3/50=6/100
Sin³α-cos³α=(sinα-cosα)(sin²α+sinacosα+cos²α)=(sina-cosa)(1+sinαcosα)=0,5+0,25sin2α