{"id":5668,"date":"2021-09-27T19:43:59","date_gmt":"2021-09-27T14:13:59","guid":{"rendered":"https:\/\/mathemerize.com\/?p=5668"},"modified":"2021-11-13T17:31:07","modified_gmt":"2021-11-13T12:01:07","slug":"maxima-and-minima-class-12","status":"publish","type":"post","link":"https:\/\/mathemerize.com\/maxima-and-minima-class-12\/","title":{"rendered":"Maxima and Minima Class 12"},"content":{"rendered":"
Here you will learn definitions and concepts of local and absolute maxima and minima class 12.<\/p>\n
Let’s begin –<\/p>\n
A function f(x) is said to have local maxima at x = a if there exist a neighbourhood (a – h, a + h) – {a} such that <\/p>\n
f(a) > f(x) for all x \\(\\in\\) (a – h, a + h) – {a}<\/p>\n
A function f(x) is said to have local minima at x = a if there exist a neighbourhood (a – h, a + h) – {a} such that <\/p>\n
f(a) < f(x) for all x \\(\\in\\) (a – h, a + h) – {a}<\/p>\n
A function f has an absolute maxima (or global maxima) at c if f(c) \\(\\ge\\) f(x) for all x in D, where D is the domain of f. The number f(c) is called the maximum value of on D.<\/p>\n
A function f has an absolute minima (or global minima) at c if f(c) \\(\\le\\) f(x) for all x in D and the number f(c) is called the minimum value of on D. The maximum and minimum values of f are called the extreme values of f.<\/p>\n
Note :<\/strong><\/p>\n (i) the maximum & minima values of a function are also known as local\/relative maxima or local\/relative minima as these are greatest & least values of the function relative to some neighbourhood of the point in question.<\/p>\n (ii) the term ‘extrema’ is used both for maxima or minima.<\/p>\n (iii) a maximum (minimum) value of a function may not be the greatest (least) value in a finite interval.<\/p>\n (iv) a function can have several extreme values & a local minimum value may even be greater than a local maximum value.<\/p>\n (v) local maximum & local minimum values of a continuous function occur alternatively & between two consecutives local maximum values there is a local minimum value & vice versa.<\/p>\n\n\n