Mister Exam
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- The intersection points of functions
-
How to use it?
- Graphing y =:
- x^2+3x-10
-
(x^2+3)/(x-1)
- x^2-10x+27
- ((x+1)^2)/(x-2)
- Derivative of:
-
3x+5
- Equation:
- 3x+5
- Integral of d{x}:
-
3x+5
-
Identical expressions
- 3x+ five
- 3x plus 5
- 3x plus five
-
Similar expressions
- 4*x^2-3*x+5
- |x^2-3*x+5|
- -3*x+5
- 3x-5
Graphing y = 3x+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:
$$3 x + 5 = 0$$
Solve this equation
The points of intersection with the axis X:
Analytical solution
$$x_{1} = - \frac{5}{3}$$
Numerical solution
$$x_{1} = -1.66666666666667$$
so we need to solve the equation:
$$3 x + 5 = 0$$
Solve this equation
The points of intersection with the axis X:
Analytical solution
$$x_{1} = - \frac{5}{3}$$
Numerical solution
$$x_{1} = -1.66666666666667$$
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
$$3 = 0$$
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
$$3 = 0$$
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
$$\lim_{x \to -\infty}\left(3 x + 5\right) = -\infty$$
Let's take the limit
so,
horizontal asymptote on the left doesn’t exist
$$\lim_{x \to \infty}\left(3 x + 5\right) = \infty$$
Let's take the limit
so,
horizontal asymptote on the right doesn’t exist
$$\lim_{x \to -\infty}\left(3 x + 5\right) = -\infty$$
Let's take the limit
so,
horizontal asymptote on the left doesn’t exist
$$\lim_{x \to \infty}\left(3 x + 5\right) = \infty$$
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
$$\lim_{x \to -\infty}\left(\frac{3 x + 5}{x}\right) = 3$$
Let's take the limit
so,
inclined asymptote equation on the left:
$$y = 3 x$$
$$\lim_{x \to \infty}\left(\frac{3 x + 5}{x}\right) = 3$$
Let's take the limit
so,
inclined asymptote equation on the right:
$$y = 3 x$$
$$\lim_{x \to -\infty}\left(\frac{3 x + 5}{x}\right) = 3$$
Let's take the limit
so,
inclined asymptote equation on the left:
$$y = 3 x$$
$$\lim_{x \to \infty}\left(\frac{3 x + 5}{x}\right) = 3$$
Let's take the limit
so,
inclined asymptote equation on the right:
$$y = 3 x$$
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:
$$3 x + 5 = 5 - 3 x$$
- No
$$3 x + 5 = 3 x - 5$$
- No
so, the function
not is
neither even, nor odd
So, check:
$$3 x + 5 = 5 - 3 x$$
- No
$$3 x + 5 = 3 x - 5$$
- No
so, the function
not is
neither even, nor odd