The points at which the function is not precisely defined: x1=0
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: x2asin(log(x))=0 Solve this equation The points of intersection with the axis X:
The points of intersection with the Y axis coordinate
The graph crosses Y axis when x equals 0: substitute x = 0 to asin(log(x))/x^2. 02asin(log(0)) The result: f(0)=∞~ sof doesn't intersect Y
Extrema of the function
In order to find the extrema, we need to solve the equation dxdf(x)=0 (the derivative equals zero), and the roots of this equation are the extrema of this function: dxdf(x)= the first derivative xx21−log(x)21−x32asin(log(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 dx2d2f(x)=0 (the second derivative equals zero), the roots of this equation will be the inflection points for the specified function graph: dx2d2f(x)= the second derivative x4−1−log(x)21+log(x)2−1log(x)+6asin(log(x))−1−log(x)24=0 Solve this equation The roots of this equation x1=2.09653484237811 You also need to calculate the limits of y '' for arguments seeking to indeterminate points of a function: Points where there is an indetermination: x1=0
x→0−limx4−1−log(x)21+log(x)2−1log(x)+6asin(log(x))−1−log(x)24=∞i x→0+limx4−1−log(x)21+log(x)2−1log(x)+6asin(log(x))−1−log(x)24=∞i - limits are equal, then skip the corresponding point
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 [2.09653484237811,∞) Convex at the intervals (−∞,2.09653484237811]
Vertical asymptotes
Have: x1=0
Horizontal asymptotes
Let’s find horizontal asymptotes with help of the limits of this function at x->+oo and x->-oo x→−∞lim(x2asin(log(x)))=0 Let's take the limit so, equation of the horizontal asymptote on the left: y=0 x→∞lim(x2asin(log(x)))=0 Let's take the limit so, equation of the horizontal asymptote on the right: y=0
Inclined asymptotes
Inclined asymptote can be found by calculating the limit of asin(log(x))/x^2, divided by x at x->+oo and x ->-oo x→−∞lim(xx2asin(log(x)))=0 Let's take the limit so, inclined coincides with the horizontal asymptote on the right x→∞lim(xx2asin(log(x)))=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: x2asin(log(x))=x2asin(log(−x)) - No x2asin(log(x))=−x2asin(log(−x)) - No so, the function not is neither even, nor odd