when x approaches from left side  in questions it's used like this put x=4-h or in its vice versa put x =4+h. what does 4+h and 4-h signifies? what is h?

Asked by Akshiet kutiyal | 9th Jun, 2014, 02:05: AM

Expert Answer:

I n space b a s i c space l i m i t s space a n d space c o n t i n u t y space c o n c e p t s comma space w e space t r y space t o space u s e space t h i s space t e r m space c a l l e d space t e d n i n g space t o...  T e n d i n g space t o space s i g n i f i e s space t h a t space t h e space v a l u e space i s space a p p r o a c h i n g. space S o space f o r space a space g i v e n space v a l u e space w e space c a n space a p p r o a c h space i t space f r o m space t w o space s i d e s space o n space t h e space n u m b e r space l i n e space f r o m space t w o space s i d e s  s o space i f space w e space a r e space a p p r o a c h i n g space f r o m space l e f t space s i d e comma space w h i c h space m e a n s space w e space a r e space o n space l e s s e r space s i d e space o f space t h e space n u m b e r. space S o space w e space u s e space open parentheses minus h close parentheses i f space w e space a r e space a p p r o a c h i n g space f r o m space r i g h t space s i d e comma space w h i c h space m e a n s space w e space a r e space a p p r o a c h i n g space f r o m space g r e a t e r space s i d e space o f space n u m b e r. space S o space w e space u s e space open parentheses plus h close parentheses   H e r e space apostrophe h apostrophe space i s space a space s m a l l space i n f i n i t e s i m a l space n u m b e r space w h i c h space i s space t e n d i n g space t o space z e r o space o r space a l m o s t space e q u a l space t o space z e r o. space  A b o v e space c o n c e p t space i s space e x p l a i n e d space i n space t h e space f o l l o w i n g space f i g u r e.  space space

Answered by Dharma Teja | 9th Jun, 2014, 11:14: AM