\(\left(\frac{1}{243}\right)^9=\left(\frac{1}{3^4}\right)^9=\frac{1}{3^{4.9}}=\frac{1}{3^{36}}\)
\(\left(\frac{1}{83}\right)^{13}\frac{1}{3^{42}}\Rightarrow\left(\frac{1}{81}\right)^{13}
so sánh 2 phân số:
\(\left[\frac{1}{243}\right]^9và\left[\frac{1}{83}\right]^{13}\)
So sánh hai phân số :
\(\left(\frac{1}{243}\right)^9\)và \(\left(\frac{1}{83}\right)^{13}\)
So sánh:
\(^{ }\left(\frac{1}{243}\right)^9\) và \(\left(\frac{1}{83}\right)^{13}\)
So sánh
\(\left(\frac{1}{243}\right)^9\) và \(\left(\frac{1}{83}\right)^{13}\)
So sánh :
a) \(\left(\frac{1}{243}\right)^9\) và \(\left(\frac{1}{83}\right)^{13}\)
b)1990^10+1990^9 và 1991^10
so sanh
\(\left(\frac{1}{243}\right)^9va\left(\frac{1}{83}\right)^{13}\)
so sánh:
\(\left[-\frac{1}{5}\right]^9và\left[-\frac{1}{25}\right]^5\)
So sánh
\(\left(\frac{1}{15}\right)^9và\left(\frac{1}{20}\right)^7\)
SO SÁNH
\(\left(\frac{1}{80}\right)^7va\left(\frac{1}{243}\right)^6\)
\(\left(\frac{3}{5}\right)^5va\left(\frac{5}{243}\right)^3\)
\(\frac{-22}{35}va\frac{-103}{177}\)
\(\frac{84}{-83}va\frac{-337}{331}\)