∵a^2+b^2=c^2,则(a+b)^2=c^2+2ab,∴(a+b)^2-c^2=2ab,
即(a+b+c)(a+b-c)=2ab,
a+b-c=m,
a+b+c=L,
S=(1/2)ab,
代入得Lm=4S,
∴S/L=m/4.
题中SL=4m是错误的.
∵a^2+b^2=c^2,则(a+b)^2=c^2+2ab,∴(a+b)^2-c^2=2ab,
即(a+b+c)(a+b-c)=2ab,
a+b-c=m,
a+b+c=L,
S=(1/2)ab,
代入得Lm=4S,
∴S/L=m/4.
题中SL=4m是错误的.