Nguyễn Tuấn Huy
Giới thiệu về bản thân
f(a)+f(b)=f(a)+f(1−a) = 100 a +10 100 a + 100 1−a +10 100 1−a = 100 a +10 100 a + 100 a 100 +10 100 a 100 = 100 a +10 100 a + 100 a 100 . 100+10.100 a 100 a = 100 a +10 100 a + 10+100 a 10 = 10+100 a 100 a +10 =1(đpcm)
f(a)+f(b)=f(a)+f(1−a) = 100 a +10 100 a + 100 1−a +10 100 1−a = 100 a +10 100 a + 100 a 100 +10 100 a 100 = 100 a +10 100 a + 100 a 100 . 100+10.100 a 100 a = 100 a +10 100 a + 10+100 a 10 = 10+100 a 100 a +10 =1(đpcm)
f(a)+f(b)=f(a)+f(1−a) = 100 a +10 100 a + 100 1−a +10 100 1−a = 100 a +10 100 a + 100 a 100 +10 100 a 100 = 100 a +10 100 a + 100 a 100 . 100+10.100 a 100 a = 100 a +10 100 a + 10+100 a 10 = 10+100 a 100 a +10 =1(đpcm)
f(a)+f(b)=f(a)+f(1−a) = 100 a +10 100 a + 100 1−a +10 100 1−a = 100 a +10 100 a + 100 a 100 +10 100 a 100 = 100 a +10 100 a + 100 a 100 . 100+10.100 a 100 a = 100 a +10 100 a + 10+100 a 10 = 10+100 a 100 a +10 =1(đpcm)
f(a)+f(b)=f(a)+f(1−a) = 100 a +10 100 a + 100 1−a +10 100 1−a = 100 a +10 100 a + 100 a 100 +10 100 a 100 = 100 a +10 100 a + 100 a 100 . 100+10.100 a 100 a = 100 a +10 100 a + 10+100 a 10 = 10+100 a 100 a +10 =1(đpcm)
f(a)+f(b)=f(a)+f(1−a) = 100 a +10 100 a + 100 1−a +10 100 1−a = 100 a +10 100 a + 100 a 100 +10 100 a 100 = 100 a +10 100 a + 100 a 100 . 100+10.100 a 100 a = 100 a +10 100 a + 10+100 a 10 = 10+100 a 100 a +10 =1(đpcm)
f(a)+f(b)=f(a)+f(1−a) = 100 a +10 100 a + 100 1−a +10 100 1−a = 100 a +10 100 a + 100 a 100 +10 100 a 100 = 100 a +10 100 a + 100 a 100 . 100+10.100 a 100 a = 100 a +10 100 a + 10+100 a 10 = 10+100 a 100 a +10 =1(đpcm)