Basic calculus combined, the two is an oxymoron. You’d see college students in engineering courses flopping on their desks and crying out math for all I know. It’s fairly easy though-or atleast simple. Just learn the basics and it goes hand-in-hand. A little practice here and there wouldn’t be so hard as well.
There are four words at heart in Calculus. The essential part of Calculus and the first key term, is limits.
Now you may be wondering what this is or maybe you already encountered it in Ma’am Diaz’ class. If you’re in your last year of middle school or a college engineer major; whatever it is, you’re in here for calculus.
Limits at infinity are used to describe the behavior of functions as the independent variable increases or decreases without bound.
So why stydy them? Can we even use them? Seldom a person would think of calculus’ importance in life. Well I’ll tell you, it’s really just to pass your subject–kidding’s aside, it also has its essence in real life and applications.
They allow us to think of what will happen or what are the possibilities as we approach the “infinite” and infinitely small.
Consider we have a function x and we’d like to know thr area under a curve and above the x-axis meaning an interval from a to b. Depending on the curve, we can draw a rectangle. But that would be a bad approximation. If it were to approach infinity we’d just get a bunch of rectangles drawn adding up a bunch of heights from x to f.
The example given above isn’t that visualize-able so let’s say it this way. If we’d want to study how functions change with variation of a parameter then limits would fall out of description.
Let’s say x(t) is a function that tells where a jet is at a given time (t). Now we want to know how fast the jet is moving at t=10 seconds. We may not know how to find its speed at the exact moment but we can find the average speed within a time interval. We can find the exact speed by finding its limit.
The sample above was from Jane Zakob a BS Applied Mathematics graduate of The University of Colorado. She also answers questions in Quora about the importance of calculus, a must read after this article.
To sum it up, limits allows us to study on numbers from afar. Albeit, we can study the points around it to get a better understanding of the points we want to know.

