感覺這題要用反函數

Finding Values In Exercises 28-30, find f-1(a) for the function f and real number a. Function 30. f(x) = x³ - Real Number 4 x > 0 a = 6 X

請問綠色框起來的是什麼意思

example.o A,B: sets, |A|-|B|=n<∞ A function f : A → B is one to one Proof (F) Suppose 39, #az & fears = fiaz) : 充分必要 if and only if it is onto. 7-1-4 3 | { bib = fca, for a EA & 979, 192}|≤n-2 =|f(A)| = h-1 < |B| 7 f is not onto Proof

這題的解答給的是C, 該怎麼求出，感謝！

6. Find the volume of the solid whose region is the intersection of the cube {(x, y, z) : |x| ≤ 1, |y| ≤ 1, || ≤ 1} and the ball {(x, y, z) = x² + y²+ z² < 2}. 16 (A) 32(√2-1). (B) (8-√2). 3 16 (C) (10- √2)TT. (D) √√2π. 3 32 3

想請問例題1.2及類題，這種題型每次都是化簡到最後一步帶數字算錯，不知道數字怎麼帶

說例9 求(1) lim Vx²+x+1-x -x) = = ? (2) lim (√x² +1-x) = ? x- X100 基本題 [解]此二題皆屬於 ∞-∞,不可直接相減哦!設法化為「分式」 (√x+x+1-x) -x)(√x x)(122+x+ (1)原式= lim X-700 = 1 1+1 2 (2)原式 = lim X900 = 答 原式= lim x →∞ = [x²+x+1+x lim X→∞ [x²+x+1+x ++! 146-56 (√x² +1 − x)(√x ² + 1 + x) - * +D= ** √x² +1+x x->0<x²+1+x 思考:若憑直覺,會以為 ∞-∞=0,這當然不一定是對的! * * XAL), 類求 lim x²+3x-1-vx²-3x-1)=? X→00 = lim 6x x² +3x-1+vx². = lim___x+1 X→○ x² +x+1+x 2 - 3x-1 1+1 pmit=273 (√x2+3x-1=√x2-3x-1)(x2+3x-1+√x2-3x-1 ↓x2+3x-1+~x²-3x-1 0 =3 ° + 2 :30+5+12-

統計學 二項分配求解

Bin 三. (15%)假設在一個地點抽樣調查結果發現某時段會出現的車輛數為二項分配 (Binomial Distribution),此項調查結果的數值資料如下表,請計算求得某時 段出現6部車的機率 P(6) ? 車數/時段 4 5 8 調查到的 10 次數 frequency 7 8 8 7 9 7

微積分 這個怎麼寫阿

f dx S It sinx

不好意思可以問一下！這題有沒有會嗎！謝謝🙏

19. 汽車維修花費 汽車維修花費不斷上升,2015 平均維修花費為 $367 (U.S. News & “也是或World Report website)。假定汽車維修花費是常態分配,標準差為 $88。回答以下關 於汽車維修費的問題。 a. 維修花費超過 $450 的機率是多少? b. 維修花費低於 $250 的機率是多少? k c. 維修花費介於$250到$450 的機率是多少? d. 如果你的汽車維修是收費比較低的5%,你必須支出多少錢?

大二統計學 請問畫黃色的部分要怎麼算

268 CHAPTER 6 The Normal Distribution and Other Continuous 6.5 Given a normal distribution with = 70 and o = 20, what is the probability that a. X > 110. b. X < 10. c. X< 70 or X > 130. d. Between what two X values (symmetrically distributed around the mean) are 70% of the values. 8 6.6 Given a normal distribution with μ = 30 and σ = 4, what is the probability that a. X > 38. b. X < 25. c. Find the X value such that the area to the left of X is 5% of the total area under the normal curve. d. Between what two X values (symmetrically distributed around the mean) are 40% of the values? P(Z > 2) = (1-0,9094 = 00228 P(25-1.2²) 011056 27:25-30 4 1125 5x1165 Z=30+4 1-905=0.95 (₁28-1 46.64 = 3

想請問這題的圖應該怎麼畫

PO WWW VI VO 2.33 The diode cut-in voltage is 0.7 V and VB = 1.8 V for the circuit shown in Fig. 5. Plot vo versus v, over the range, <+5 V R = 4 KW VB D 3 Vo •T• 2.33 (a) (1) V₂ =1.8 V For U₁ 21.1V, Vo = V₁ For U, $1.1V, vo = 1.1V 72/7

想請問一下這題怎麼寫？ 感謝各位大神🥺

2. The following table summarizes results from an experiment in which subjects were first classified as smokers or nonsmokers. After these subjects were given a treatment, later they were again classified as smokers or nonsmokers. After-smoker After- non-smoker Before- smoker 40 14 Before- non- smoker 5 80 2-1. How many subjects changed their smoking status after the treatment? 2-2. How many subjects appear to be unaffected by the treatment? 2-3. Using the appropriate frequencies, find the value of the test statistic. 2-4. Using a 0.025 significance level, find the critical value, and make your conclusion. 2-5. Based on the preceding results, do you think this treatment is really benefit to help people quit smoking?