In your college days you must have heard about infinity in mathematics. So what is it exactly, A number, a concept or something else. For someone who is not familiar with infinity it looks like a sideways eight (Its symbols resemble of sidewise 8).
According to Wikipedia it is defined as: Infinity is an abstract concept describing something without any limit and is relevant in a number of fields, predominantly mathematics and physics. The English word infinity derives from Latin infinitas, meaning "being without finish", and which can be translated as "unboundedness", itself calqued from the Greek word apeiros, meaning "endless"
Practically you can think that the earth have finite number of grains of sands, but its impossible to count by humans. Although they are countable but human cant do that. So this is the infinity. It’s not too big, it’s just uncountable.
So you might wonder that what is infinity used for in maths?
Infinity is not fictitious, it exists. Infinity is very useful concept in math and physics. The conception is beneficial in arithmetic, calculus and almost every field of physics.
For example in calculus if you like to look at the slope of a point on a curve, you have to take two points that are infinitely near to each other (1/∞ apart). Another example is in range theory if you add the numbers 1+1/2+1/4+1/8..... It gets nearer and nearer to the number 2, however never reaches it. But the concept is if you go to the infinity of calculation, the sum will be 2 exactly. In mathematics you investigate how a function behaves when it goes ∞ and -∞ because it past all of the ups and downs.
According to Wikipedia it is defined as: Infinity is an abstract concept describing something without any limit and is relevant in a number of fields, predominantly mathematics and physics. The English word infinity derives from Latin infinitas, meaning "being without finish", and which can be translated as "unboundedness", itself calqued from the Greek word apeiros, meaning "endless"
Practically you can think that the earth have finite number of grains of sands, but its impossible to count by humans. Although they are countable but human cant do that. So this is the infinity. It’s not too big, it’s just uncountable.
So you might wonder that what is infinity used for in maths?
Infinity is not fictitious, it exists. Infinity is very useful concept in math and physics. The conception is beneficial in arithmetic, calculus and almost every field of physics.
For example in calculus if you like to look at the slope of a point on a curve, you have to take two points that are infinitely near to each other (1/∞ apart). Another example is in range theory if you add the numbers 1+1/2+1/4+1/8..... It gets nearer and nearer to the number 2, however never reaches it. But the concept is if you go to the infinity of calculation, the sum will be 2 exactly. In mathematics you investigate how a function behaves when it goes ∞ and -∞ because it past all of the ups and downs.
