The first derivative of exponential function I only know that the exponential function of E is itself, what is y = 10 ^ x

The first derivative of exponential function I only know that the exponential function of E is itself, what is y = 10 ^ x

Derivative is an important basic concept in calculus. When the increment of the independent variable approaches zero, the limit of the quotient between the increment of the dependent variable and the increment of the independent variable. When a function has a derivative, it is said that the function is differentiable or differentiable. The differentiable function must be continuous. The discontinuous function must not be differentiable

Why is the derivative of y = 2 (50-x) not right? Help
The correct answer is - 2, and I use y = 2U, u = 50-x to derive the answer is 2 * - 1 * - 1 = 2

First, the derivative of the outer function is obtained and f '= 2;
After deriving the inner function, u '= - 1 is obtained;
f'=2*u'=2*(-1)=-2
no problem.
Your answer is wrong. Don't seek the derivative of inner function at the same time when you seek the derivative of outer function

4 / 5-4 / 5 * 5 / 6
3floor
I can't offer you a reward

1/5+4/5 * 3/10 =1/5 + 12/50=10/50+12/50=22/50=11/25
4/5-4/5 * 5/6=4/5 - 4/6=24/30-20/30=4/30=2/15
The multiplication of fractions means that the numerator multiplies the numerator and the denominator multiplies the denominator
The addition and subtraction of fractions is the general division, that is, the denominator is changed into the same, and then the molecules are added and subtracted
This explains!

7600kg = () t () kg = () t
The number writing after "million" is omitted and recorded as ()
The minimum two digits of both odd and composite numbers are ()
In a ratio, the quotient of the product of two external terms divided by the product of two internal terms is ()
Simple calculation
7 and 1 / 5 ／ 1.25 ／ 8 136-136x5 4-136 ／ 0.2
17 △ 51 + (1 / 68 + 2 / 51) x17

7600 kg = (7) t (600) kg = (7.6) t
The number writing of 48.76 billion yuan (48070.6 million) is rewritten as the number writing of "ten thousand" (48070.6 million), and the ending number after hundred million is omitted as (48.1 billion)
The minimum two digits of odd and composite numbers are (15)
In a ratio, the quotient of the product of two external terms divided by the product of two internal terms is (1)
Simple calculation
7 and 1 / 5 △ 1.25 △ 8
=7.2÷（1.25×8）
=7.2÷10
=0.72
4 of 136-136x5-136 △ 0.2 here is estimated to be × 0.2
=136-136×0.8-136×0.2
=136×（1-0.8-0.2）
=136×0
=0
17 △ 51 + (1 / 68 + 2 / 51) x17
=1 / 3 + 1 × 17 out of 68 + 2 × 17 out of 51
=1 / 3 + 1 / 4 + 2 / 3
=1 / 3 + 2 / 3 + 1 / 4
=1 + 1 / 4
=5 / 4