use a graph to find the zeros of the function

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• Find an equation of the tangent line to the graph of the function f(x) = 8/(√x^2+3x) at the point (1,4)
• use a graph to find the zeros of the functionf(x)=2^(x)-5（是2的x次方.）这里的零点指的是什么?,与x-axis or y-axis 的交点?还是别的什么?不用翻译,
• Given two zeros of the polynomial function,find the other zeros.给个例子来说我的疑问吧：EX：F（X）=X^4+6X^3-4X^2-54X-45;-3,3最后那两个-3和3便是the two zeros of given.但是我用3来作综合除法之后就不知道如何FACTOR这个 多项式了,我的进度是——（X-3）（.）那么在“.”是什么呢?还有两个例子：F(X)=3X^4-2X^3-12X^2+6X+9F(X)=X^4+2X^3-14X^2-32X-32我还不是很懂啊
• 1.A function has exactly 3 zeros; they are -1,0,and 2.The function passes through the point (1,6).Sketch the function,find the equation for function.2.Find the asymptotes of the following functions.if it does not have a particular type of asymptotes(verticle,horizontal,or oblique) then briefly say why it does not.describe the end of behaviour of each function.find the intercept.draw the graph.remeber to plot a decent number of points on either side of
• 微积分Find the intervalConsider the function below.(Round the answers to two decimal places.If you need to use - or ,enter -INFINITY or INFINITY.) f(θ) = 2cos(θ) + (cos (θ))^20 ≤ θ ≤ 2π (a) Find the interval of increase.Find the interval of decrease.(b) Find the local minimum value.(c) Find the inflection points.(smaller x value)(larger x value)Find the interval where the function is concave up.Find the intervals where the function is concave down.
• sketch the graph y=3∧x[这是x次方] on an x-y axes.use a domain of -3＜x＜3.write out the function that:a)reflects this function
• （）easily you will find it to use the computer if you know the function
• 一道数学数学题目（英文的)是关于导函数的!1.Sketch a graph of the exponential function g(x)=5^x.Then use the derivative formulaf'(x) = lim f'(x)=lim [f(x+h)-f(x)]/h to estimate f'(5),f'(0),and f'(10)(this can be done using the table on youh→0graphing calculator,but make sure you write down the formula you entered in place of y1.) Do these values make sense compared to your sketch?From your graph,explain the valuesof lim f'(x) and lim f'(x)x→-∞ x→∞翻译过来的大概意思是：给指函数方程 g(x)=5^
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• Find an equation of the tangent line to the graph of the function f(x) = 8/(√x^2+3x) at the point (1,4)
• 已知抛物线的顶点在坐标原点，对称轴为x轴，且与圆x2+y2=4相交于A、B两点，|AB|=23，求抛物线方程．
• 已知抛物线的顶点在坐标原点，对称轴为x轴，且与圆x2+y2=4相交于A、B两点，|AB|=23，求抛物线方程．