\(\frac{a}{k}=\frac{x}{a}\)
\(\Rightarrow a^2=kx\)
\(\frac{b}{k}=\frac{y}{b}\)
\(\Rightarrow b^2=ky\)
\(\Rightarrow\frac{a^2}{b^2}=\frac{kx}{ky}=\frac{x}{y}\)
\(Cho:\frac{a}{k}=\frac{x}{a}và\frac{b}{k}=\frac{y}{b}.CMR:\frac{a^2}{b^2}=\frac{x}{y}\)
cho \(\frac{a}{k}=\frac{x}{a}\); \(\frac{b}{k}=\frac{y}{b}\)
CMR:\(\frac{a^2}{b^2}=\frac{x}{y}\)
Cho\(\frac{a}{k}=\frac{x}{a}\); \(\frac{b}{k}=\frac{y}{b}\). Chứng minh rằng \(\frac{a^2}{b^2}=\frac{x}{y}\)
cho \(\frac{a}{k}=\frac{x}{a};\frac{b}{k}=\frac{y}{b}.\) chứng minh : \(\frac{a^2}{b^2}=\frac{x}{y}\)
cho \(\frac{a}{k}=\frac{x}{a};\frac{b}{k}=\frac{y}{b}\)
chứng minh \(\frac{a^2}{b^2}=\frac{x}{y}\)
cho \(\frac{a}{k}=\frac{x}{a};\frac{b}{k}=\frac{y}{b}\)
chứng minh \(\frac{a^2}{b^2}=\frac{x}{y}\)
Cho \(\frac{a}{k}=\frac{x}{a}\) ; \(\frac{b}{k}=\frac{y}{b}\). Chứng minh \(\frac{a^2}{b^2}=\frac{x}{y}\)
Cho \(\frac{a}{x}=\frac{b}{y}=\frac{c}{z}\)
CMR : \(\frac{ak^2+bk=c}{xk^2+yk+x}\)không phụ thuộc vào k
cho \(\frac{k}{x}=\frac{a}{c};\frac{k}{y}=\frac{b}{d}\)trong do c+d=k. cmr:ax+by=k2
