计算机维修作业指导书

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1.直线x+2y+1=0与抛物线(y^2)=4x的交点个数为?2.两平行直线2x-4y+5=0与x-2y-4=0的距离为?3.经过圆x^2 +y^2 =17上一点P(-1 ,4)的切线方程?4.已知椭圆的两焦点为F1(-4,0),F2(4,0),点P在椭圆上,若△PF1F2的 抛物线Y=X的平方+4X+2与直线Y=3分之一的交点个数反弹道导弹 Let f be a function such that f(x)=f(1-x) for all real numbers x.If f is differentiable everywhere,then f'(0)=?为什么是-f'(1)而不是f'(1)? if f(x) is a linear function such that f(2)=5 and f(4)=13,f(x)=? 抛物线y=x^2+1与抛物线y=-x^2+c的交点的个数最多有几个? I suppose that is why...中that作什么成分? let h be a differentiable function,and let f be the function defined by f(x)=h(x2-3).Which of the following is equal to f'(2)?a.h'(1) b.4h'(2) c.4h'(2) d.h'(4) e.4h'(4) 职场英语翻译 意义 职场英语难不难职场英语好难呀, 关于职场的英语剧本.我们要表演关于职场的英语小品/话剧,各位有没有什么好剧本提供一下,越快越好. y=cos(x-π/6)[√3sin(x-π/6)+cos(x-π/6)]怎么化简(求最值)化简步骤详细一点, f(x)=3sin^2+2sinxcosx+cos^2 化简 化简√3sin (x/2)+cos(x/2) 设函数f(x)=根3sin(x)+cos(x),角x的顶点与坐标接如题.坐标原点重合,始边与x轴非负半轴重合,终边经过点P(x,y)且x属于0到派(都包含).(1)若点P的坐标为(二分之一,二分之根三),求f 已知抛物线y=-3/4x^2-x+m与x轴有两个不同的交点A、B,抛物线的顶点为C.求是否存在实数m,使△ABC为等腰直角三角形. 对数运算法则推导 对数推导公式问题4.与2类似处理M^n=M^n由基本性质1(换掉M)a^[log(a)(M^n)] = {a^[log(a)(M)]}^n由指数的性质a^[log(a)(M^n)] = a^{[log(a)(M)]*n}又因为指数函数是单调函数,所以log(a)(M^n)=nlog(a)(M)指数函数是单调 已知二次函数y满足f(x)=1,且f(x+1)-f(X)=2x,求函数解析式 抛物线y=x^2一4x+3与y轴的交点坐标(0、3)求与x轴的交点坐标 若a/b*b=2/45,则a 、b的最小值是a=( ),b=( ) 新鲜野蘑菇怎么做好吃 The content of elements must consist of well-formed character data or markup. ibatiS启动的异常 The content of elements must consist of well-formed character data or markup 已知f(x)是二次函数,且满足f(0)=1,f(x+1)-f(x)=2x,求f(x) 二次函数满足f(x+1)-f(x)=2x+3且f(0)=-3急求1.求f(x)的解析式2.设圆C经过点上述二次函数的图像与两坐标轴的三个交点,求圆C的方程3.设直线l1:mx-y+2=0与第二小题中的圆C交与AB两点,是否存在实 抛物线y=4x²-1,与x轴的交点坐标是为什么? The content of element type "taglib" must match "(tlib-version,jsp-version,short-name,uri?,display-name?,small-icon?,large-icon?,description?,validator?,listener*,tag+)".无法识别 抛物线=4X^-1与Y轴的交点坐标为-------. f(x)为二次函数,且f(0)=1 f(x+1)-f(x)=2x , 求f(x)xiexie Multiple-Choice:Given that a triangle with vertices A(2,1),B(4,5),and C(6,1) is reflected acrossthe y-axis,what will be the coordinates of the image of (a) (-5,4) (b) (-4,5) (c) (4,-5) (d) (5,-4) (1/2)If you were given the choice of how to die,what manner of death wou what is the expected excess of premiums over claims,given that the husband survives 5 years