Expressão 5: left parenthesis, 1 , 1 , right parenthesis1,1
5
Expressão 6: "r" equals StartRoot, 2 , EndRoot left brace, 0 less than or equal to theta less than StartFraction, pi Over 4 , EndFraction , right bracer=20≤θ<π4
6
Expressão 7: left parenthesis, StartRoot, 2 , EndRoot , 0 , right parenthesis2,0