An equation is meant to be solved, that is, there are some unknowns. A formula is meant to be evaluated, that is, you replace all variables in it with values and get the value of the formula. …

2013年5月28日 · I love your answer for a line equation in the form of z = f (x, y)... Unfortunately calculating square roots can be impractical from the calculational standpoint and hence I really …

2014年7月23日 · The equation of an object is a way of telling whether a point is part of an object -- if you substitute the coordinates of the point into the equation and the equation is true, then …

2011年10月2日 · I need to graph a rectangle on the Cartesian coordinate system. Is there an equation for a rectangle? I can't find it anywhere.

Equation means equality. They are both related to the word equal. If such an equality is true for all values of the variable, it is called an identity, e.g., $\sin^2x+\cos^2x=1$ is true for all x. If …

2017年4月20日 · Get the equation of a circle through the points $(1,1), (2,4), (5,3) $. I can solve this by simply drawing it, but is there a way of solving it (easily) without having to draw?

2020年8月13日 · Ellipse general equation from dimensions, offset, and tilt angle Ask Question Asked 5 years, 1 month ago Modified 5 years, 1 month ago

2015年7月26日 · Among these differential equations why one is linear while other is non-linear? What is criteria to find out whether a differential equation is linear or non-linear?

2013年8月13日 · You'll need to complete a few actions and gain 15 reputation points before being able to upvote. Upvoting indicates when questions and answers are useful. What's reputation …

2017年1月8日 · The equation for your reflected line can be constructed using the point-slope form, $y=m (x-x_Q)+y_Q$. The point $ (x_Q,y_Q)$ is easily obtained as the intersection of …