मराठी

Evaluate the following limits: limx→3[1x-3-9xx3-27] - Mathematics and Statistics

Advertisements
Advertisements

प्रश्न

Evaluate the following limits: `lim_(x -> 3) [1/(x - 3) - (9x)/(x^3 - 27)]`

बेरीज
Advertisements

उत्तर

`lim_(x -> 3) [1/(x - 3) - (9x)/(x^3 - 27)]`

= `lim_(x -> 3)[1/(x - 3) - (9x)/(x^3 - 3^3)]`

= `lim_(x -> 3)[1/(x - 3) - (9x)/((x - 3)(x^2 + 3x + 9))]`

= `lim_(x -> 3)[(x^2 + 3x + 9 - 9x)/((x - 3)(x^2 + 3x + 9))]`

= `lim_(x -> 3)[(x^2 - 6x + 9)/((x - 3)(x^2 + 3x + 9))]`

= `lim_(x -> 3)[(x - 3)^2/((x - 3)(x^2 + 3x + 9))]`

= `lim_(x -> 3)[(x - 3)/(x^2 + 3x + 9)]    ...[(because x ->3","  x ≠ 3),(therefore x - 3 ≠ 0)]`

= `(3 - 3)/((3)^2 + 3(3) + 9)`

= `0/27`

= 0

shaalaa.com
  या प्रश्नात किंवा उत्तरात काही त्रुटी आहे का?
पाठ 7: Limits - EXERCISE 7.2 [पृष्ठ १०२]

APPEARS IN

Share
Notifications

Englishहिंदीमराठी


      Forgot password?
Use app×