代数式x1-
a
+ln10+sin（x2+2л）/cos（57o）对应的VisualBasic表达式是（）

[单选题]代数式x1-|a|+In10+sin(x2+2π)/cos57°对应的Visual Basic表达式是( )。A．X1-Abs(A)+Log(10)+Sin(X2+2*3.14)/Cos(57*3.14/180)B．X1-Abs(A)+Log(10)+Sin(X2+2*π)/Cos(57*3.14/180)C．X1-Abs(A)+LOg(10)+Sin(X2+2*3.14)/Cos(57)D．X1-Abs(A)+Log(10)+Sin(X2+2*π)/Cos(57)

[单选题]代数式eXSin(30°)2x/(x+y)Inx对应的Visual Basic表达式是( )。A．E^*Sin(30*3.14/180)*2*X/X+Y*Log(X)B．Exp(X)*Sin(30)*2*X/(X+Y)*Ln(X)C．Exp(X)*Sin(30*3.14/180)*2*X/(X+Y)*Log(X)D．Exp(X)*Sin(30*3.14/180)*2*X/(X+Y)*Ln(X)

[单选题]数学式[(3.2x2+ln(1.2))x-5.1]x-sin(x)对应的VB6.0表达式是( )。A．((3.2x^2+log(1.2))*x-5.1)*x - SinxB．((3.2 * x * x+ ln(1.2))*x-5.1)*x - Sin(x)C．((3.2x * 2+ log(1.2))x-5.1)*x - Sin(x)D．((3.2 * x* x + log(1.2))* x -5.1)* x - Sin(x)

1.化简代数式：(3x)cdot (2(y)^2)=__________1.化简代数式：=__________

(11) lim _(xarrow 0)dfrac (3sin x+{x)^2cos dfrac (1)(x)}((1+cos x)ln (1+x))= __

[单选题]代数式，|e2×A＋lgy13+sin y2|对应的Visual Basic表达式是 ______。A．Abs(e^2*a+Log(y1^3)+Sin(y2))B．Abs(Exp(2)*a+Log(y1^3)／Log(10)+Sin(y2))C．Abs(e^2*a+lg(y1^3)+Sin(y2))D．Abs(Exp(2)*a+Log(y1^3)+Sin(y2))

[试题]求代数式的值：（1）6x+2x²-3x+x²+1，其中x=-5 ;（2）4x²+3xy-x²-9，其中x=2，y= -3 ;（3）3pq-4m/5-4pq,其中m=-5，p=-1/4,q=-3/2

[单选题]代数式exSin（300）2x/（x+y）lnx对应的VB表达式是（）A . E^X*Sin（30*3.14/180）*2*x/x+y*log（x）B . Exp（x）*Sin（30）*2*x/（x+y）*ln（x）C . Exp（X）*Sin（30*3.14/180）*2*x/（x+y）*log（x）D . Exp（X）*Sin（30*3.14/180）*2*x/（x+y）*ln（x）

求极限 lim _(xarrow 1)dfrac (ln [ cos (x-1)] )(1-sin dfrac {pi )(2)x}

(sin x)=dfrac (1)({cos )^2x} in (0,dfrac (pi )(2)),则(sin x)=dfrac (1)({cos )^2x}