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rate of change rate of change introduction the rate-of-change roc indicator which is also referred to as simply momentum is a pure momentum oscillator that measures the percent change in price from one period to the next the roc calculation compares the current price with the price n periods ago the plot forms an oscillator that fluctuates above and below the zero line as the rate-of-change moves from positive to negative as a momentum oscillator roc signals include centerline crossovers divergences and overbought-oversold readings divergences fail to foreshadow reversals more often than not so this article will forgo a discussion on divergences even though centerline crossovers are prone to whipsaw especially short-term these crossovers can be used to identify the overall trend identifying overbought or oversold extremes comes natural to the rate-of-change oscillator example find the slope of a line passing through the points 4,4 and 8 2 know more about probability distribution math.tutorvista.com page no 1/4

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you have several choices :1 you can graph the points and count the vertical changes and horizontal changes to use in the formula the rate of change in algebra is the ratio that shows the relation between the two variables in equation in general the coefficient of x is called as the rate of change of an equation for example in y=3x+4 the rate of change is 3 3 is the coefficient of x in this equation the constant variable is 4 in calculus the rate of change of equation can easily be obtained from the slope equation the slope of the equation is also called as rate of change of the equation the subject of calculus had its origin mainly in the geometrical problem of determination of the gradient of a curve at a point there of resulting in the determination of the tangent at the point this subject has also rendered possible precise formulations of a large number of physical concepts such as velocity at an instant acceleration at an instant curvature at a point density at a point specific heat at any temperature etc each of which appears as local or instantaneous rate of change as against the average rate of change many practical relationships involve independent and dependent quantities rate of change formula in calculus rate of change is equal to slope of the equation the formula for slope equation can be written as slope rise of the equationrun of the equation slope y2-y1x2-x1 rate of change of x with respect to y is given as dxdy learn more standard normal distribution table math.tutorvista.com page no 2/4

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rate of change of y dxdy speed as rate of change an object moving in a straight line is an example of a rate of change model we use the 2 dimensional graph sheet to represent the path described by the point in the given time for example if a train travels 400 km in 5 hrs and 600 km in next 7 then the rate of change of distance with time is 600-400 7-5 2002 100 km/hr hence the speed of the train is 100 km/hr average rate of change in geometrical concepts the term `rate of change is the slope of the line joining the two points of the line this is also called as the average rate of change math.tutorvista.com page no 4/4

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thank you for watching presentation

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