Saved Bookmarks
| 1. |
दर्शाइये कि फलन `f(x) = 2x - |x|` बिन्दु x = 0 पर संतत है । |
|
Answer» यहाँ `f(x) = 2x - |x|, a = 0` (i) `f(0) = 2 xx 0-|0|=0-0=0` (ii) R.H.L. `=underset(x rarr 0^(+))(lim)f(x)=underset(h rarr 0)(lim)f(0+h)` `=underset(h rarr 0)(lim)2(0+h)-|0+h|` `=underset(h rarr 0)(lim)2h-|h|` `=0 - 0 = 0` (iii) L.H.L. `=underset(x rarr 0^(-))(lim)f(x)=underset(h rarr 0)(lim)f(0-h)` `=underset(h rarr 0)(lim)2(0-h)-|0-h|` `=underset(h rarr 0)(lim)-2h-|h|," "[because |-x|=|x|]` `=0 - 0 = 0` `therefore" "underset(x rarr 0^(+))(lim)f(x)=underset(x rarr 0^(-))(lim)f(x)=f(0)` अत: f(x) बिन्दु x = 0 पर संतत है । |
|