{"id":16982,"date":"2023-05-30T09:20:14","date_gmt":"2023-05-30T06:20:14","guid":{"rendered":"https:\/\/starlanguageblog.com\/?p=16982"},"modified":"2023-05-30T09:20:14","modified_gmt":"2023-05-30T06:20:14","slug":"solving-power-equations","status":"publish","type":"post","link":"https:\/\/www.starlanguageblog.com\/solving-power-equations\/","title":{"rendered":"Solving Power Equations"},"content":{"rendered":"
We must separate the exponentiating variable to solve exponential functions. With “a” as the base and “x” as the exponent, exponential functions have the general form f(x) = axe. The objective is to identify the value of “x” that resolves the inequality or equation. There are various options depending on the precise issue and the desired resolution.<\/span><\/p>\n We can frequently utilize logarithms to remove the variable from the exponent while solving power equations. We can simplify the equation and immediately solve for the variable by taking the logarithm of both sides of the equation. The exact challenge at hand, as well as any existing constraints, will determine the logarithm basis to use.<\/span><\/p>\n Let’s use the equation 2 x 16 as an example. By taking the logarithm of both sides and using a logarithm base to solve for “x,” we may make the problem simpler. Since the exponential function’s base is two, we can utilize the logarithm base 2 in this situation. Logarithmically speaking, log2(2x) = log2(16).<\/span><\/p>\n We reduce the equation to x = log2(16) using the logarithm property that says loga(ab) = b. x = 4 is the result of evaluating the right-hand side of the logarithm. Consequently, x = 4 is the equation 2x = 16’s answer.<\/span><\/p>\n The strategy is similar when dealing with inequalities using exponential functions. We can utilize logarithms to remove the variable from the exponent and directly answer the inequality. It’s crucial to remember that only when the base of the logarithm is positive do logarithms maintain the inequality’s order.<\/span><\/p>\n It is essential to look for any constraints on the function’s domain or any potential superfluous solutions that might emerge throughout the solving process while solving exponential functions. Furthermore, the solutions could not be limited to real numbers if the function involved complex numbers.<\/span><\/p>\n An exponential equation is an equation with exponents where the exponent (or a part of the exponent) is a variable. For example, 3x = 81, 5x – 3 = 625, 62y – 7 = 121, etc. are some examples of power equations. We may come across the use of power equations when we are solving the problems of algebra, compound interest, exponential growth, exponential decay, etc.<\/span><\/p>\n There are three types of power equations. They are as follows:<\/span><\/p>\n We will go into the subject of equations with exponents, investigating their characteristics, norms, and solution methods.<\/span><\/p>\n Exponents are a quick way to represent repeated multiplication. They are also referred to as powers or indexes. An exponent indicates how many times a base has been multiplied by itself. For instance, the base and exponent in the expression 23 are 2 and 3, respectively. It denotes a three-fold multiplication of 2 by itself:<\/span><\/p>\n 2^3 = 2 \u00d7 2 \u00d7 2 = 8<\/span><\/p>\n Exponents’ characteristics make calculations simpler. One important characteristic is the product of powers, which causes the exponents to be added when two integers with the same base but different exponents are multiplied.<\/span><\/p>\n a(m+n) = a(m a)<\/span><\/p>\n The power of a power is another characteristic, according to which increasing one exponent by another exponent multiplies the exponents:<\/span><\/p>\n (a m ) n = a m n<\/span><\/p>\n An understanding of these properties is necessary for manipulating and resolving equations with exponents.<\/span><\/p>\n We must use techniques that decompose the equation and isolate the variable to solve equations with exponents. Here are several methods that are frequently used:<\/span><\/p>\n You can solve for the variable and locate the solution to equations with exponents by using these methods and carefully altering the equation.<\/span><\/p>\n While solving an exponential equation, the bases on both sides may be the same or not. Here are the formulas used in each case, which we will learn in detail in the upcoming sections.<\/span><\/p>\n This property is useful for solving an exponential equation with the same bases. It says that when the bases on both sides of an exponential equation are equal, the exponents must also be equal. i.e.,<\/span><\/p>\n ax = ay \u21d4 x = y.<\/span><\/p>\n We know that logarithms are nothing but exponents and vice versa. Hence, an exponential equation can be converted into a logarithmic function. This helps in the process of solving an exponential equation with different bases. Here is the formula to convert power equations into logarithmic equations.<\/span><\/p>\n bx = a \u21d4 logba = x<\/span><\/p>\n Sometimes, an exponential equation may have the same base on both sides. For example, 5 x 53 has the same base five on both sides. Sometimes, though the exponents on both sides are not the same, they can be made the same. For example, 5x = 125. Though it doesn’t have the same bases on both sides of the equation, they can be made the same by writing it as 5x = 53 (as 125 = 53). To solve the power equations in each of these cases, we just apply the property of equality of power equations, using which we set the exponents to be the same and solve for the variable.<\/span><\/p>\n Here is another example where the bases are not the same but can be made to be the same.<\/span><\/p>\n We know that 343 is 73. Using this, the given equation can be written as,<\/span><\/p>\n 7y + 1 = (73)y<\/span><\/p>\n 7y + 1 = 73y<\/span><\/p>\n Now the bases on both sides are the same. So we can set the exponents to be the same.<\/span><\/p>\n y + 1 = 3y<\/span><\/p>\n Subtracting y from both sides,<\/span><\/p>\n 2y = 1<\/span><\/p>\n Dividing both sides by 2,<\/span><\/p>\n y = \u00bd<\/span><\/p>\n Solve the equation 3x3x = 81.<\/span><\/p>\n In this example, we have the base three raised to the power of the variable x, and the equation is set equal to 81. Our goal is to determine the value of x that satisfies the equation.<\/span><\/p>\n To solve this equation, we can use the property of logarithms, which states that if ax = b, then loga(b) = x. Applying this property, we can take the logarithm of both sides of the equation with the base 3:<\/span><\/p>\n log3(3x) = log3(81).<\/span><\/p>\n By using the property mentioned above, the equation simplifies to:<\/span><\/p>\n x = log\u2083(81).<\/span><\/p>\n Now, we need to evaluate the logarithm of 81 with base 3. The logarithm represents the exponent to which the base must be raised to obtain the argument. In this case, we want to find the exponent to which three must be raised to obtain 81. Evaluating this logarithm yields:<\/span><\/p>\nWhat Are Power Equations?<\/span><\/h2>\n
Types of power equations<\/b><\/h3>\n
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Equations With Exponents<\/span><\/h2>\n
Recognizing\u00a0Exponents\u00a0<\/b><\/h3>\n
Exponentiation of Equations<\/b><\/h3>\n
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Power Equations Formulas<\/span><\/h2>\n
Property of Equality for power equations<\/b><\/h3>\n
power equations to Logarithmic Form<\/b><\/h3>\n
Solving Power Equations With The Same Bases<\/span><\/h2>\n
Example: Solve the exponential equation 7y + 1 = 343y<\/b><\/h3>\n
Solution<\/b><\/h3>\n
Example<\/b><\/h3>\n