The meaning of youth If a: youth is a pyramid, is enterprising, youth can radiate great energy

A is a pyramid, is enterprising. B two linked hearts, is friendship. C is not full moon, is a regret. D is a harp, is happy. E is a bookshelf, is wisdom. F is a flag, is ideal. G is fist, is strength. The strength of youth = vigor + courage + aura. H is single bar, is movement. I is individual's

A youth is
It's going to be tonight

D is a harp, playing out all kinds of ups and downs of life

What do the 26 letters in English mean

The true meaning of the twenty-six English letters a -- accept if you love him, you will accept everything about him, even his shortcomings B -- belif (trust) does not trust each other's love, only the end of the breakup C -- care (care) degree of concern, just shows how much you attach importance to him D -- digest his love, you will find that, Even if you are married, you should give each other freedom and secret space. G -- give, not necessarily gain. But if you don't give, you will not gain. H -- heart the most important thing in love is heart, treat it sincerely, Love with your heart I -- independence over reliance on each other will become a heavy burden J -- jealousy appropriate jealousy means that you attach importance to him, but remember to be moderate K -- kiss a kiss is better than a thousand words L -- love how can love be without love Love is to protect each other's body and soul. Q -- quarter is the key to love, because you are the one who loves him most, If you love him, you will be able to share happiness and sorrow with him. Of course, you should love him tenderly. If you stand on the other side's side, he will be able to understand your partner's attitude towards love, The important thing is that you should grow up with him at the same time. X -- "X" (multiplication sign) multiply your love constantly, and love will be infinite. When you are not together, remember to say: "I miss you very much." Z -- zest (enthusiasm) appropriate enthusiasm can add a lot of fun

The fourth order determinant, the first line 1 2 3 4, the second line - 2 1 - 4 3, the third line 3 - 4 - 1 2, the fourth line 4 3 - 2 - 1,

Four column vectors are orthogonal to each other, the common factor √ (1 ^ 2 + 2 ^ 2 + 3 ^ 2 + 4 ^ 2) is proposed, the rest is orthogonal matrix, and the determinant is 1
So the original formula = (1 ^ 2 + 2 ^ 2 + 3 ^ 2 + 4 ^ 2) ^ 2 = 900

What is 2295 divided by 79.5?

28.867924528301886792452830188679

When x tends to 0, find the limit of (x + e ^ x) ^ (1 / x)

The formula of 1 ^∞ type
Suppose limf (x) ^ (g (x)) is 1 ^∞ type, then find limg (x) [f (x) - 1] = a first, and the limit of the original formula is e ^ a
LIM (X -- > 0) (e ^ X-1 + x) / x = 2, so the original limit is e ^ 2

17 / 25 divided by 7 / 5 divided by 4 / 15

Hello
17/25÷7/5÷4/15
=17/35÷4/15
=51/28
If you don't understand this question, you can ask. If you are satisfied, please click "adopt as a satisfactory answer" in the lower right corner
If you have any other questions, please take this question and send it to me. Please understand
O(∩_ ∩) O, I wish you progress in your study!

Factorization of a ^ 2B ^ 2-A ^ 2

a^2b^2-a^2
=a²（b²-1）
=a²（b+1）（b-1）

1 / 2 divided by [2 / 3 * (1 / 8 + 1 / 4)] 21 divided by (1 / 3 + 2 / 5) divided by 9 / 11
Formula process

2,35

It is known that there are two symmetries on the circle C: x2 + Y2 + 2x + a = 0 with respect to the line L: MX + y + 1 = 0. (I) find the value of M; (II) find the equation of circle C when the line L and circle C intersect at two points a and B, OA · ob = - 3 (o is the coordinate origin)

(1) X2 + Y2 + 2x + a = 0 {(x + 1) 2 + y2 = 1-A, Center (- 1, 0). ∵ there are two points on the circle C: x2 + Y2 + 2x + a = 0 about the line L: MX + y + 1 = 0 symmetry, ∵ the line passes through the center, ∵ m + 0 + 1 = 0 {M = 1, so the value of M is 1. (II) let a (x1, Y1), B (X2, Y2) OA · ob = x1x2 + y1y2 = 2x1

The meaning of youth If a: youth is a pyramid, is enterprising, youth can radiate great energy