Expressão 5: "r" equals StartFraction, 1 Over 225 , EndFraction theta plus 0.5 left brace, 0 less than theta less than alpha , right bracer=1225θ+0.50<θ<α
00
Domínio \theta mínimo:
less than or equal to theta less than or equal to≤θ≤
1.81.8
Domínio \theta máximo:
5
`\alpha` left parenthesis, 0.4 , 0.3 , right parenthesis0.4,0.3
Legenda:
6
Expressão 7: "y" equals 3 left brace, 4 less than or equal to "x" less than or equal to 5.5 , right bracey=34≤x≤5.5
7
`旋转,看看！` left parenthesis, StartFraction, alpha Over 5 , EndFraction plus 4 , 3 , right parenthesisα5+4,3
Legenda:
8
9
desenvolvida por
desenvolvida por
"P" ( "R" cosine alpha ， "R" sine alpha )P(Rcosα，Rsinα)
