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How do you check f(xy) is continuous or not on interval?

To check if the function ( f(xy) ) is continuous on a given interval, you can follow these steps: First, identify the points in the interval where ( xy ) is evaluated. Then, determine if ( f ) itself is continuous at those points by checking if the limit of ( f(xy) ) as ( (x,y) ) approaches any point in the interval equals ( f ) at that point. If both the function and the limit are defined and equal at all points in the interval, then ( f(xy) ) is continuous on that interval.


Can you Give an example of bounded function which is not Riemann integrable?

Yes. A well-known example is the function defined as: f(x) = * 1, if x is rational * 0, if x is irrational Since this function has infinitely many discontinuities in any interval (it is discontinuous in any point), it doesn't fulfill the conditions for a Riemann-integrable function. Please note that this function IS Lebesgue-integrable. Its Lebesgue-integral over the interval [0, 1], or in fact over any finite interval, is zero.


How do you solve step functions?

To solve step functions, first identify the intervals defined by the step function. Determine the value of the function within each interval, which is typically constant. For a specific input, find which interval it falls into and use the corresponding constant value. If needed, you can also analyze the function graphically to visualize the jumps and constant sections.


What is a perfect interval and how is it defined in music theory?

A perfect interval in music theory is a type of interval that is considered to have a strong and stable sound. It is defined as an interval that is either a unison, fourth, fifth, or octave, and has a specific number of half steps between the two notes.


What is the average rate of change for this quadratic function for the interval from x 3 to x 5?

To find the average rate of change of a quadratic function over an interval, you can use the formula: (\frac{f(b) - f(a)}{b - a}), where (a) and (b) are the endpoints of the interval. In this case, if the function is defined as (f(x)), you would calculate (f(5)) and (f(3)), subtract the two values, and then divide by (2) (which is (5 - 3)). The specific values will depend on the quadratic function provided.


Define upper and lower sums?

Let P = { x0, x1, x2, ..., xn} be a partition of the closed interval [a, b] and f a bounded function defined on that interval. Then: * the upper sum of fwith respect to the partition P is defined as: U(f, P) = cj (xj - xj-1) where cj is the supremum of f(x)in the interval [xj-1, xj]. * the lower sum of f with respect to the partition P is defined as L(f, P) = dj (xj - xj-1) where dj is the infimum of f(x) in the interval [xj-1, xj].


The time interval of 365.242 days is defined as the?

Tropical year


What is the highest value on the domain of the function?

To determine the highest value on the domain of a function, you first need to identify the function's domain, which consists of all permissible input values (x-values). The highest value would be the maximum point within that domain. If the domain is restricted to a specific interval, the highest value would be the endpoint of that interval, assuming the function is defined and continuous at that point. Always consider the behavior of the function at the boundaries of the domain to ensure you identify the correct maximum.


What is the number of values that lie in an interval?

The number of values that lie in an interval depends on the specific range and how it is defined. Generally, it can vary from zero values to an infinite number of values within the interval.


Determine which is the graph of the function Here is the equation httptinyurlcom4bzq4m Here is choice's 1-2-3-4 httptinyurlcom49u2og httptinyurlcom3ernxz httptinyurlcom5xkelp httptinyurlcom4g8r4q?

The question was, let f(x) = 2x if x < -2, ...2x - 2 if -2 <= x <= 2, and ...-2 if x < -2; and what is its graph. You might call this a piecewise-defined linear function. The easiest way to determine this is to look at each interval and see: * Is the function a straight line on each whole interval? * Can you pick two points on each interval so that they match the equation? * And is it a function? Do that and you'll be able to tell. E-mail me if you have more questions on this.


How do you determine the relative minimum and relative maximum values of functions and the intervals on which functions are decreasing or increasing?

You take the derivative of the function. The derivative is another function that tells you the slope of the original function at any point. (If you don't know about derivatives already, you can learn the details on how to calculate in a calculus textbook. Or read the Wikipedia article for a brief introduction.) Once you have the derivative, you solve it for zero (derivative = 0). Any local maximum or minimum either has a derivative of zero, has no defined derivative, or is a border point (on the border of the interval you are considering). Now, as to the intervals where the function increase or decreases: Between any such maximum or minimum points, you take any random point and check whether the derivative is positive or negative. If it is positive, the function is increasing.


What are the characteristics of a piecewise function?

A piecewise function is defined by multiple sub-functions, each applicable to a specific interval or condition of the independent variable. Its characteristics include distinct segments of the graph, which can have different slopes, shapes, or behaviors, depending on the defined intervals. The function may have discontinuities at the boundaries where the pieces meet, and it can be defined using linear, quadratic, or other types of functions within its segments. Overall, piecewise functions are useful for modeling situations where a rule changes based on the input value.