arctan10x＝90
    arctan10x+arctan0.2x＝90
    arctan10x+arctan2x＝90
    ㏑x=112.79
    x+1=0
    ln（8x-1）=4
    x
    105.26*sin90.55+188.802*sin(13.7917+x)+59.122*sin(267.2678-x)+42.306*sin(185+x)+157.965*sin(172.5311-x)=0
    8100x^4+4(16-9x^2)(225x^2+144)
    5÷30+x÷30=x÷20
    105.26*cos90.55+188.802*cos (13.7917+x)+59.122*cos(267.2678-x)+42.306*cos(185+x)+157.965*cos(172.5311-x)=0
    105.26*cos90.55+188.802*cos (13.7917+x)+59.122*cos(267.2678+x)+42.306*cos(185+x)+157.965*cos(172.5311+x)=0
    32－15（2x－5）＝17
    1-x2
    x=1 y=4
    3.5x+5300=9950
    1.5x+2x+3300+2000=9950
    80*2.08=1.63x
    30(x-15)=18(x+15)
    30(x-15)=18(x-15)

Home page << page2382 page2383 page2384 page2385 page2386 ... ... page2388 page2389 page2390 page2391 page2392 >> Last page 31237 pages in total