Mister Exam
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- The intersection points of functions
-
How to use it?
- Graphing y =:
- (x^2-x-6)/(x-2)
- (x+2)/((x^2+16)×(x^2-1))
- x^3+3x^2-9x+15
- -x^2+4x
- Limit of the function:
-
3*x/5
-
Identical expressions
- three *x/ five
- 3 multiply by x divide by 5
- three multiply by x divide by five
- 3x/5
- 3*x divide by 5
-
Similar expressions
- (1+x^4+3*x)/(5+3*x^4)
- 4cos*((1+3x)/5)-1
- (-1+2*x^2+3*x)/(5+x)
- (42/29+3*cos(3*x)*exp(-7*x)/58+7*exp(-7*x)*sin(3*x)/58)*exp(7*x)
Graphing y = 3*x/5
The solution
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:
$$\frac{3 x}{5} = 0$$
Solve this equation
The points of intersection with the axis X:
Analytical solution
$$x_{1} = 0$$
Numerical solution
$$x_{1} = 0$$
so we need to solve the equation:
$$\frac{3 x}{5} = 0$$
Solve this equation
The points of intersection with the axis X:
Analytical solution
$$x_{1} = 0$$
Numerical solution
$$x_{1} = 0$$
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
$$\frac{3}{5} = 0$$
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
$$\frac{3}{5} = 0$$
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
$$0 = 0$$
Solve this equation
Solutions are not found,
maybe, the function has no inflections
$$\frac{d^{2}}{d x^{2}} f{\left(x \right)} = 0$$
(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
$$0 = 0$$
Solve this equation
Solutions are not found,
maybe, the function has no inflections
Horizontal asymptotes
Let’s find horizontal asymptotes with help of the limits of this function at x->+oo and x->-oo
$$\lim_{x \to -\infty}\left(\frac{3 x}{5}\right) = -\infty$$
Let's take the limit
so,
horizontal asymptote on the left doesn’t exist
$$\lim_{x \to \infty}\left(\frac{3 x}{5}\right) = \infty$$
Let's take the limit
so,
horizontal asymptote on the right doesn’t exist
$$\lim_{x \to -\infty}\left(\frac{3 x}{5}\right) = -\infty$$
Let's take the limit
so,
horizontal asymptote on the left doesn’t exist
$$\lim_{x \to \infty}\left(\frac{3 x}{5}\right) = \infty$$
Let's take the limit
so,
horizontal asymptote on the right doesn’t exist
Inclined asymptotes
Inclined asymptote can be found by calculating the limit of (3*x)/5, divided by x at x->+oo and x ->-oo
$$\lim_{x \to -\infty} \frac{3}{5} = \frac{3}{5}$$
Let's take the limit
so,
inclined asymptote equation on the left:
$$y = \frac{3 x}{5}$$
$$\lim_{x \to \infty} \frac{3}{5} = \frac{3}{5}$$
Let's take the limit
so,
inclined asymptote equation on the right:
$$y = \frac{3 x}{5}$$
$$\lim_{x \to -\infty} \frac{3}{5} = \frac{3}{5}$$
Let's take the limit
so,
inclined asymptote equation on the left:
$$y = \frac{3 x}{5}$$
$$\lim_{x \to \infty} \frac{3}{5} = \frac{3}{5}$$
Let's take the limit
so,
inclined asymptote equation on the right:
$$y = \frac{3 x}{5}$$
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:
$$\frac{3 x}{5} = - \frac{3 x}{5}$$
- No
$$\frac{3 x}{5} = \frac{3 x}{5}$$
- No
so, the function
not is
neither even, nor odd
So, check:
$$\frac{3 x}{5} = - \frac{3 x}{5}$$
- No
$$\frac{3 x}{5} = \frac{3 x}{5}$$
- No
so, the function
not is
neither even, nor odd