Log8 (9) = a, log2 (5) = B, then LG2) =? True number in brackets

Log8 (9) = a, log2 (5) = B, then LG2) =? True number in brackets

b=(lg10-lg2)/lg2=(1-lg2)/lg2=(1/lg2)-1
lg2=1/(b+1).
It has nothing to do with a?

Log8 9 = a log = B find LG2

Log8 9 = a, log9 25 = B, find lg22 / 3log2 (3) = a, log3 (5) = B, log2 (3) = 3A / 2, log2 (5) / log2 (3) = B, log2 (5) = b * log2 (3) = 3AB / 2. LG2 = log2 (2) / log2 (10) = 1 / [log2 (2) + log2 (5)] = 1 / [1 + 3AB / 2] = 2 / (2 + 3AB)

What is log27 (16) / log3 (4),
27 is the base number and 16 is the true number
On the second floor, I don't quite understand why log27 (16) = LG16 / lg27

Using the formula of changing bottom, B with a as the bottom is equal to LGB / LGA
Another formula to know is LGA ^ B = blga
So log27 (16) = LG16 / lg27 = LG2 ^ 4 / Lg3 ^ 3 = 4lg2 / 3lg3
log3(4)=lg4/lg3=2lg2/lg3
So the original formula is 2 / 3

Imitate 10000-0 (absolutely safe) 1000 square = 100 times 100 times 100 (by all means) 7 divided by 2 (no three no four) 1 / 100 () what to fill in?

One in a hundred

The total weight of the three steel plates is 207kg. The weight of the first steel plate is three times that of the first steel plate, the weight of the second steel plate is two times that of the third steel plate, and how many kg are the three steel plates?

Suppose the third x, then 6x + 2x + x = 207, x = 23, so the third block is 23kg, the second block is 46kg, and the first block is 138kg

"△" is a new operation, which stipulates: a △ B = 3A + 2B, then 2 △ 3=_______________ .

a△b = 3a + 2b
2△3=3×2+2×3=12

Given that x is a real number, y is a pure imaginary number and satisfies (2x-1) + (3-y) I = Y-I, then how much is x equal? How much is y equal?

Take a seat and answer
Let y = ki
There are
(2x -1) + (3-ki)*i
=2x-1 + 3i+k
=(k-1)i
Two complex numbers are equal
Then the real part and the imaginary part are equal respectively
So there is
2x-1+k = 0
And 3 = k-1
So k = 4, x = - 3 / 2
So there are
y = 4i

There are 72 kg apples in the fruit shop, which is 1 / 8 of the weight of pears. The weight of peaches is 1 / 3 of pears. How many kg peaches are there in the fruit shop

Pear weight = 72 △ 1 / 8 = 72 × 8 = 576kg
Peach weight = 576 × 1 / 3 = 192 kg
Hope to help you
If you have any questions, you can ask
Thank you for your adoption

Calculation: 50 + 49-48 + 47-46 + ·· - 4 + 3-2 + 1

50+49-48+47-46+···-4+3-2+1
=50+(49-48)+(47-46)+.+(5-4)+(3-2)+1
=50+1+1+.+1+1
=50+24+1
=75

On the vector representation of sinusoidal alternating current

The instantaneous value of sinusoidal quantity is very similar to complex number, so there is a relatively simple method to calculate sinusoidal alternating current: it is calculated by complex number, which is called vector method. Another name in the book is "symbol method". The calculation method is complex number operation. For example, a = a + JB is the positive