xét x<1/5:
=>A=-(x-1/5)+1-x
=1/5+1-x-x=6/5-2x<6/5-2.1/5=4/5
xét x>(=)1/5:
=>A=x-1/5+1-x
=4/5
vậy MinA=4/5 khi x>(=)1/5
xét x<1/5:
=>A=-(x-1/5)+1-x
=1/5+1-x-x=6/5-2x<6/5-2.1/5=4/5
xét x>(=)1/5:
=>A=x-1/5+1-x
=4/5
vậy MinA=4/5 khi x>(=)1/5
Tìm x:
a)\(\left(3x-1\right)\left(-\frac{1}{2}x+5\right)=0\)
b)\(-5\left(x+\frac{1}{5}\right)-\frac{1}{2}\left(x-\frac{2}{3}\right)=\frac{3}{2}x-\frac{5}{6}\)
Tìm GTNN
a.\(A=\left|\frac{x}{5}+\frac{23}{2}\right|+\left|y-\frac{14}{3}\right|+2019\)
b. \(B=\left(x-\frac{5}{4}\right)^{20}+\left(y+\frac{4}{3}\right)^{30}-11\)
AI LÀM NHANH TỚ TIM
Tìm x biết :
a, \(\frac{1}{3}.x+\frac{2}{5}.\left(x-1\right)=0\)
b,\(3.\left(x-\frac{1}{2}\right)-5.\left(x+\frac{3}{5}\right)=x+\frac{1}{5}\)
a0Timf GTNN của bt A=\(\left(2x+\frac{1}{3}\right)^4-1\)
b)Tìm GTLN của bt B=\(-\left(\frac{4}{9}x-\frac{2}{15}\right)^6+3\)
GIÚP MIK NHA, 5 NGƯỜI ĐẦU ĐÚNG MIK TICK
tìm x biết :
a. \(\frac{1}{3}.x+\frac{2}{5}.\left(x-1\right)=0\)
b.\(3.\left(2.x-\frac{5}{4}\right)=\left(3-1\frac{1}{2}\right).\left(x-\frac{1}{2}\right)\)
Tìm x, biết :
a) \(\left(\frac{3}{4}.x-\frac{9}{16}\right).\left(\frac{1}{3}+\frac{-3}{5}:x\right)=0\)
b) \(\left(x-\frac{1}{3}\right).\left(x+\frac{2}{5}\right)>0\)
c) \(\left(x+\frac{3}{5}\right).\left(x+1\right)< 0\)
Tìm x, biết :
a) \(\left(\frac{3}{4}.x-\frac{9}{16}\right).\left(\frac{1}{3}+\frac{-3}{5}:x\right)=0\)
b) \(\left(x-\frac{1}{3}\right).\left(x+\frac{2}{5}\right)>0\)
c) \(\left(x+\frac{3}{5}\right).\left(x+1\right)< 0\)
a,Tìm GTNN của \(P=\frac{x}{\sqrt{x}+1}\left(x>1\right)\)
b,Tìm GTLN của \(D=\frac{\sqrt{x-9}}{5x}\)
tìm x biết:
a)\(\left(2.x+3\right)-\left(5.x-17\right)=9\)
b)\(\left(\frac{1}{5}+\frac{4}{5}.x\right)-\left(\frac{2}{5}.x+\frac{1}{9}\right)=\frac{3}{7}\)
có cả lời giải mới tik