how to solve an equation
Answers
Answer:
send me that question I will it for you.
Step-by-step explanation:
You can solve an equation using Solve. Remember to use "==" in an equation, not just "=":
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The result is a Rule inside a doubly nested list. The outer list holds all of the solutions and each inner list holds a single solution. Here there are three solutions:
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To solve a system of equations, use a list in the first argument:
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Here there are two solutions to a simultaneous system of equations; each solution set is wrapped in its own list:
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Here the solution expresses one variable in terms of another:
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To use one of these solutions (here the first one is shown), use [[...]] (the short form of Part) to extract it from the list of solutions and use /. (the short form of ReplaceAll) to apply the rule:
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For example, here is a plot of x^2 – y^2 for different values of y, assuming that the first solution holds:
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In a system of equations with multiple variables, you can solve for some or all of the variables by using a list in the second argument:
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If the system is underspecified, the Wolfram Language will give an answer in terms of the remaining variables:
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Solve finds what are known as "generic" solutions to equations. These are solutions that do not depend on the variables not specified in the second argument. For example:
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No matter what y is, putting in 0 for x solves the equation. But there is another solution that does depend on y: namely, setting y to 0. Adding y in the second argument makes this solution show up: