Mister Exam
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How to use it?
- Graphing y =:
- (x+3)/(x-4)
- -x^3+3x+2
- x^3-3*x-2
- x^3+6*x^2+9*x+4
- Derivative of:
-
arccos(sqrt(x))
-
Identical expressions
- arccos(sqrt(x))
- arc co sinus of e of ( square root of (x))
- arccos(√(x))
- arccossqrtx
Graphing y = arccos(sqrt(x))
The solution
You have entered
[src]
/ ___\ f(x) = acos\\/ x /
$$f{\left(x \right)} = \operatorname{acos}{\left(\sqrt{x} \right)}$$
f = acos(sqrt(x))
The graph of the function
The points of intersection with the X-axis coordinate
Graph of the function intersects the axis X at f = 0
so we need to solve the equation:
$$\operatorname{acos}{\left(\sqrt{x} \right)} = 0$$
Solve this equation
The points of intersection with the axis X:
Analytical solution
$$x_{1} = 1$$
Numerical solution
$$x_{1} = 1$$
so we need to solve the equation:
$$\operatorname{acos}{\left(\sqrt{x} \right)} = 0$$
Solve this equation
The points of intersection with the axis X:
Analytical solution
$$x_{1} = 1$$
Numerical solution
$$x_{1} = 1$$
Extrema of the function
In order to find the extrema, we need to solve the equation
$$\frac{d}{d x} f{\left(x \right)} = 0$$
(the derivative equals zero),
and the roots of this equation are the extrema of this function:
$$\frac{d}{d x} f{\left(x \right)} = $$
the first derivative
$$- \frac{1}{2 \sqrt{x} \sqrt{1 - x}} = 0$$
Solve this equation
Solutions are not found,
function may have no extrema
$$\frac{d}{d x} f{\left(x \right)} = 0$$
(the derivative equals zero),
and the roots of this equation are the extrema of this function:
$$\frac{d}{d x} f{\left(x \right)} = $$
the first derivative
$$- \frac{1}{2 \sqrt{x} \sqrt{1 - x}} = 0$$
Solve this equation
Solutions are not found,
function may have no extrema
Inflection points
Let's find the inflection points, we'll need to solve the equation for this
$$\frac{d^{2}}{d x^{2}} f{\left(x \right)} = 0$$
(the second derivative equals zero),
the roots of this equation will be the inflection points for the specified function graph:
$$\frac{d^{2}}{d x^{2}} f{\left(x \right)} = $$
the second derivative
$$\frac{- \frac{1}{1 - x} + \frac{1}{x}}{4 \sqrt{x} \sqrt{1 - x}} = 0$$
Solve this equation
The roots of this equation
$$x_{1} = \frac{1}{2}$$
Сonvexity and concavity intervals:
Let’s find the intervals where the function is convex or concave, for this look at the behaviour of the function at the inflection points:
Concave at the intervals
$$\left(-\infty, \frac{1}{2}\right]$$
Convex at the intervals
$$\left[\frac{1}{2}, \infty\right)$$
$$\frac{d^{2}}{d x^{2}} f{\left(x \right)} = 0$$
(the second derivative equals zero),
the roots of this equation will be the inflection points for the specified function graph:
$$\frac{d^{2}}{d x^{2}} f{\left(x \right)} = $$
the second derivative
$$\frac{- \frac{1}{1 - x} + \frac{1}{x}}{4 \sqrt{x} \sqrt{1 - x}} = 0$$
Solve this equation
The roots of this equation
$$x_{1} = \frac{1}{2}$$
Сonvexity and concavity intervals:
Let’s find the intervals where the function is convex or concave, for this look at the behaviour of the function at the inflection points:
Concave at the intervals
$$\left(-\infty, \frac{1}{2}\right]$$
Convex at the intervals
$$\left[\frac{1}{2}, \infty\right)$$
Inclined asymptotes
Inclined asymptote can be found by calculating the limit of acos(sqrt(x)), divided by x at x->+oo and x ->-oo
Let's take the limit
so,
inclined asymptote equation on the left:
$$y = x \lim_{x \to -\infty}\left(\frac{\operatorname{acos}{\left(\sqrt{x} \right)}}{x}\right)$$
$$\lim_{x \to \infty}\left(\frac{\operatorname{acos}{\left(\sqrt{x} \right)}}{x}\right) = 0$$
Let's take the limit
so,
inclined coincides with the horizontal asymptote on the left
True
Let's take the limit
so,
inclined asymptote equation on the left:
$$y = x \lim_{x \to -\infty}\left(\frac{\operatorname{acos}{\left(\sqrt{x} \right)}}{x}\right)$$
$$\lim_{x \to \infty}\left(\frac{\operatorname{acos}{\left(\sqrt{x} \right)}}{x}\right) = 0$$
Let's take the limit
so,
inclined coincides with the horizontal asymptote on the left
Even and odd functions
Let's check, whether the function even or odd by using relations f = f(-x) и f = -f(-x).
So, check:
$$\operatorname{acos}{\left(\sqrt{x} \right)} = \operatorname{acos}{\left(\sqrt{- x} \right)}$$
- No
$$\operatorname{acos}{\left(\sqrt{x} \right)} = - \operatorname{acos}{\left(\sqrt{- x} \right)}$$
- No
so, the function
not is
neither even, nor odd
So, check:
$$\operatorname{acos}{\left(\sqrt{x} \right)} = \operatorname{acos}{\left(\sqrt{- x} \right)}$$
- No
$$\operatorname{acos}{\left(\sqrt{x} \right)} = - \operatorname{acos}{\left(\sqrt{- x} \right)}$$
- No
so, the function
not is
neither even, nor odd