Question

f(x)= log(x+1) by the first principal
​

Answer 1

Answer:

put x = 0 by TRAIL and ERROR MERHOD

Step-by-step explanation:

f(0) = log(1)

that equals to 0

Answer 2

Answer:

1/x

Step-by-step explanation:

f(x) = log x

∴ f ′ ( x ) = lim h → 0 f ( x + h ) − f ( x ) h f′(x)=limh→0f(x+h)−f(x)h = lim h → 0 l o g ( x + h ) − l o g x h =limh→0log(x+h)−logxh = lim h → 0 l o g ( x + h x ) h =limh→0log(x+hx)h = lim h → 0 l o g ( 1 + h x ) h =limh→0log(1+hx)h = lim h → 0 l o g ( 1 + h x ) h x × 1 x =limh→0log(1+hx)hx×1x = 1 × 1 x =1×1x = 1/x