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Is calculus hard?

Calculus covers topics like the slope of a function and the area under the graph of a function. Thus, students who have an excellent understanding of functions are less likely to have trouble learning calculus. Precalculus courses usually cover trigonometric functions, polynomial functions and the inverses of functions.\nA function is a mathematical rule that accepts some value as an input and produces a corresponding value as its output. A student can display the outputs on a graph, and the outputs sometimes form a line or curve.

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How do you calculate percentage on a basic calculator?

To calculate percentage using a basic calculator, enter the base number, multiplication button, percentage amount, percent button, and equals sign. For example to calculate 50 percent of 100, enter 100 into the calculator, and then press the multiplication button, the number 50, and the percent button. After the equal sign is pressed, the calculator should display an answer of 50. If the calculator does not have a percent button, convert the percentage to a decimal by moving the decimal point two digits to the left, and multiply it by the base. In the previous example, 100 would be multiplied ..

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What is the easiest way to calculate percentages?

If there is no decimal point, put a decimal point between the last and the second-to-last digit. To calculate 20 percent, simply multiply 10 percent by 2.\nA percentage is a representation of a fraction. It is easy to calculate certain percentages by remembering their fractional representation. For example, 50 percent is equal to one-half; thus dividing a number by two yields 50 percent of that number. Twenty-five percent is equal to one-quarter of a number; thus dividing a number by four gives 25 percent of the number.

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What are some examples of multiplication arrays?

Multiplication arrays provide a visual representation of a multiplication problem to make it easier for students to understand the concept of multiplication as repeated addition. For example, in a four by three array, students would be able to see that 4 x 3 is the same thing as 4 + 4 + 4 or 3 + 3 + 3 + 3. Arrays are useful when children are learning their multiplication tables.\nArrays are also helpful when multiplying large numbers because children can use the array to break the problem down into easier chunks. For example, 13 x 5 becomes 10 x 5 + 3 x 5. Division problems are also made easie..

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What does "median" mean in mathematics?

If there is an odd amount of numbers, the median is the number in the middle with an equal amount of numbers above it and below it. For example, in the sequence 1, 2, 3, 4, 5, the number 3 is in the middle with two numbers on either side, so the median is 3.\nWhen there is an even amount of numbers, one finds the median by locating the two middle numbers in the sequence, adding them together and dividing by two. In the sequence 1, 2, 3, 4, 5, 6, the two middle numbers are 3 and 4. When they are added together and divided by two, they yield a median of 3.5.

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How many corners does a square-based pyramid have?

A square-based pyramid has eight edges, four along the square base and four where the triangle side faces meet each other. The surface area of a pyramid can be calculated by determining the surface area of each of the sides. Since all triangle faces are identical, the surface area for each are the same. The formula for volume is the base area times the height, all divided by three.

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How many sides does a pentagon have?

In addition to having five sides, the sides must also form a closed shape. Sides also must be straight. Pentagons can be regular or irregular. An irregular pentagon refers to any pentagon where all sides are not equal, which consequently means that their angles are not equal, either. Other closely related shapes to pentagons include four-sided shapes, quadrilaterals, and six-sided shapes, which are called hexagons.

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How is cos 4pi evaluated?

First, the cosine function has a period of 2?, meaning that cos x = cos (x + 2?). Using this formula, we know that cos 0 = cos 2? = cos 4?. Recalling that cos 0 = 1, we know that cos 4? = cos 0 = 1.\nIn cases of cos 2n? or sin 2n?, where n is a whole number, this is a simple process. However, this process does not always involve simple terms like this. This is when the trigonometric addition formula for cosine is helpful.\nFirst, suppose that cos z needs to be evaluated, and z = x + y, where x, y and z are real numbers.\nThen, cos(x + y) = (cos x)(cos y) -(sin x)(sin y)\nUsing 2? as both x and..

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How do you find the slope and y-intercept of a line?

Choose two sets of pointsThe first step in finding the slope and the y-intercept of a line is to choose two sets of points from the graphed line. Write the two point sets on a piece of paper, and label them point set A and point set B. Find the slopeTo find the slope of the line from the two point sets solve the following equation: change in y/change in x. Subtract the y value from point set A from the y value of point set B to find the change in the y values. Subtract the x value from point set A from the x value of point set B to find the change in x. Divide the change in y by the change in ..

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What is the formula to calculate GPM?

Gallons per minute can also be calculated by multiplying the horsepower by 1,714 and dividing the product by the fluid pressure. For fluid motor torque, the formula is the torque times the rotations per minute, divided by 36.77 times the pressure. Pump output flow in terms of gallons per minute can be found by multiplying the speed in rotations per minute by the displacement in cubic inches divided by 231.

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