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Find the derivative of $x$ using the definition

Step-by-step Solution

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Final Answer

$1$
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Step-by-step Solution

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1

Find the derivative of $x$ using the definition. Apply the definition of the derivative: $\displaystyle f'(x)=\lim_{h\to0}\frac{f(x+h)-f(x)}{h}$. The function $f(x)$ is the function we want to differentiate, which is $x$. Substituting $f(x+h)$ and $f(x)$ on the limit, we get

$\lim_{h\to0}\left(\frac{x+h-x}{h}\right)$
2

Cancel like terms $x$ and $-x$

$\lim_{h\to0}\left(\frac{h}{h}\right)$
3

Simplify the fraction $\frac{h}{h}$ by $h$

$\lim_{h\to0}\left(1\right)$
4

The limit of a constant is just the constant

$1$

Final Answer

$1$

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Got a different answer? Verify it!

Go!
1
2
3
4
5
6
7
8
9
0
a
b
c
d
f
g
m
n
u
v
w
x
y
z
.
(◻)
+
-
×
◻/◻
/
÷
2

e
π
ln
log
log
lim
d/dx
Dx
|◻|
θ
=
>
<
>=
<=
sin
cos
tan
cot
sec
csc

asin
acos
atan
acot
asec
acsc

sinh
cosh
tanh
coth
sech
csch

asinh
acosh
atanh
acoth
asech
acsch

How to improve your answer:

Main Topic: Definition of Derivative

Resolution of derivatives using the definition of the derivative, which is the limit of difference quotients of real numbers.

Used Formulas

1. See formulas

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