If I have to use the limit definition to find the derivative and I have a f(x)= 1/square root(x+a number)....how would I start this off? Do I just leave it the same or do I have to change it? Thanks
If I have to use the limit definition to find the derivative and I have a f(x)= 1/square root(x+a number)....how would I start this off? Do I just leave it the same or do I have to change it? Thanks
Step 1:multiply by :
.......... to get:
............... ..............................
Step 2: form the ratio: to get,after doing some calculations:
................... .................................................. ......................
Step 3: multiply by:
.............. to get after doing some calculations:
.....................- .................................................. ...................
Step 4: let h go to zero to get:
...................-1/2 ,which is the desired limit............................................. .....................................