YehChi

$${2}\frac{2}{3}-{1}\frac{6}{11} =6/3+2/3-(11/11+6/11) =8/3-17/11 =37/33$$

1.79769313*10^308

$$-5(3x-2)=-2x-3x-20 -15x+10+2x+3x+20=0 -10x+30=0 -10x=-30 x=3$$

Very cool picture..

$$S=4\pi r^2=36\pi r^2=9 r=3 V=4\pi r^2/3=36\pi cm^3$$

Melody,You are too complicated...

$$lny=ln(e+1)^3+\(\frac{1}{2}(x+1)-ln(x+2)-2ln(sin(3x+2)) \(\frac{y'}{y}=0+\(\frac{1}{2(x+1)}-\(\frac{1}{x+2}-\(\frac{2cos(3x+2)3}{sin(3x+2)} y'=y[\(\frac{1}{2(x+1)}-\(\frac{1}{x+2}-\(\frac{6cos(3x+2)}{sin(3x+2)}] y'=\(\frac{(e+1)^3\sqrt{x+1}}{(x+2)sin^2(3x+2)}[\(\frac{1}{2(x+1)}-\(\frac{1}{x+2}-6cot(3x+2)]$$

I thought he would give me Score..

Sorry, my English is not very good, can not understand such a long sentence.

I replaced with pictures.

1+1+1+1+1+1+1+1+1+1+1+1+1+1+1+1+1+1+1=19