Mister Exam
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-
How to use it?
- Graphing y =:
- -x^2+2x+4
- -x^2+2x-3
- x^2-2x-8
- x^2-2lnx
- Derivative of:
-
12*sin(x)-17*x+8
-
Identical expressions
- twelve *sin(x)- seventeen *x+ eight
- 12 multiply by sinus of (x) minus 17 multiply by x plus 8
- twelve multiply by sinus of (x) minus seventeen multiply by x plus eight
- 12sin(x)-17x+8
- 12sinx-17x+8
-
Similar expressions
- 12*sin(x)+17*x+8
- 12*sin(x)-17*x-8
- 12*sinx-17*x+8
Graphing y = 12*sin(x)-17*x+8
The solution
You have entered
[src]
f(x) = 12*sin(x) - 17*x + 8
$$f{\left(x \right)} = \left(- 17 x + 12 \sin{\left(x \right)}\right) + 8$$
f = -17*x + 12*sin(x) + 8
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:
$$\left(- 17 x + 12 \sin{\left(x \right)}\right) + 8 = 0$$
Solve this equation
The points of intersection with the axis X:
Numerical solution
$$x_{1} = 1.09952297575982$$
so we need to solve the equation:
$$\left(- 17 x + 12 \sin{\left(x \right)}\right) + 8 = 0$$
Solve this equation
The points of intersection with the axis X:
Numerical solution
$$x_{1} = 1.09952297575982$$
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
$$12 \cos{\left(x \right)} - 17 = 0$$
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
$$12 \cos{\left(x \right)} - 17 = 0$$
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
$$- 12 \sin{\left(x \right)} = 0$$
Solve this equation
The roots of this equation
$$x_{1} = 0$$
$$x_{2} = \pi$$
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
$$\left(-\infty, 0\right] \cup \left[\pi, \infty\right)$$
Convex at the intervals
$$\left[0, \pi\right]$$
$$\frac{d^{2}}{d x^{2}} f{\left(x \right)} = 0$$
(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
$$- 12 \sin{\left(x \right)} = 0$$
Solve this equation
The roots of this equation
$$x_{1} = 0$$
$$x_{2} = \pi$$
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
$$\left(-\infty, 0\right] \cup \left[\pi, \infty\right)$$
Convex at the intervals
$$\left[0, \pi\right]$$
Horizontal asymptotes
Let’s find horizontal asymptotes with help of the limits of this function at x->+oo and x->-oo
$$\lim_{x \to -\infty}\left(\left(- 17 x + 12 \sin{\left(x \right)}\right) + 8\right) = \infty$$
Let's take the limit
so,
horizontal asymptote on the left doesn’t exist
$$\lim_{x \to \infty}\left(\left(- 17 x + 12 \sin{\left(x \right)}\right) + 8\right) = -\infty$$
Let's take the limit
so,
horizontal asymptote on the right doesn’t exist
$$\lim_{x \to -\infty}\left(\left(- 17 x + 12 \sin{\left(x \right)}\right) + 8\right) = \infty$$
Let's take the limit
so,
horizontal asymptote on the left doesn’t exist
$$\lim_{x \to \infty}\left(\left(- 17 x + 12 \sin{\left(x \right)}\right) + 8\right) = -\infty$$
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 12*sin(x) - 17*x + 8, divided by x at x->+oo and x ->-oo
$$\lim_{x \to -\infty}\left(\frac{\left(- 17 x + 12 \sin{\left(x \right)}\right) + 8}{x}\right) = -17$$
Let's take the limit
so,
inclined asymptote equation on the left:
$$y = - 17 x$$
$$\lim_{x \to \infty}\left(\frac{\left(- 17 x + 12 \sin{\left(x \right)}\right) + 8}{x}\right) = -17$$
Let's take the limit
so,
inclined asymptote equation on the right:
$$y = - 17 x$$
$$\lim_{x \to -\infty}\left(\frac{\left(- 17 x + 12 \sin{\left(x \right)}\right) + 8}{x}\right) = -17$$
Let's take the limit
so,
inclined asymptote equation on the left:
$$y = - 17 x$$
$$\lim_{x \to \infty}\left(\frac{\left(- 17 x + 12 \sin{\left(x \right)}\right) + 8}{x}\right) = -17$$
Let's take the limit
so,
inclined asymptote equation on the right:
$$y = - 17 x$$
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:
$$\left(- 17 x + 12 \sin{\left(x \right)}\right) + 8 = 17 x - 12 \sin{\left(x \right)} + 8$$
- No
$$\left(- 17 x + 12 \sin{\left(x \right)}\right) + 8 = - 17 x + 12 \sin{\left(x \right)} - 8$$
- No
so, the function
not is
neither even, nor odd
So, check:
$$\left(- 17 x + 12 \sin{\left(x \right)}\right) + 8 = 17 x - 12 \sin{\left(x \right)} + 8$$
- No
$$\left(- 17 x + 12 \sin{\left(x \right)}\right) + 8 = - 17 x + 12 \sin{\left(x \right)} - 8$$
- No
so, the function
not is
neither even, nor odd