數學與統計 大學 4天以前 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 待回答 回答數: 0
數學與統計 大學 11天以前 有點急! 我想問以下兩個對數的導函數微分過程及為什麼是這樣做,謝謝 因為書上的解法兩題不一樣,我在想是因為ln前面的部分是常數跟3x的差別嗎?還是…其他的? 大大大感謝🙏 d dx (2+3x In(x)) 已解決 回答數: 1
數學與統計 大學 6個月以前 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? 待回答 回答數: 0
數學與統計 大學 6個月以前 請問第8題為何解答上說可以看出a-2b=0?另一個問題打不出來所以寫圖片裡面。 感謝🙏 8.已知f(x)= sin 4x+a-2b 3x 2a+b 9 9 x #0 x = 0 在 x=0 連續,問常數(a,b)=? 尚未解決 回答數: 1
數學與統計 大學 7個月以前 想問這題作法,感謝🙏 4. Solve the initial value problem (15%) y"+5y'+6y= f(t),y(0) = 9, (0)=-4, with f(t)=- 5, for 0≤t<l 0, for t≥1 尚未解決 回答數: 1
數學與統計 大學 8個月以前 請問這題極限要怎麼寫,感謝🥺 in ², if 0 ≤ xª sin² ≤ xª for all x = 0. x (10)15.Evaluate the limit lim x4 sin x→0 已解決 回答數: 1
數學與統計 大學 11個月以前 請問此題的鉛直漸進線及斜漸進線怎麼求(漸進線求法已了解,但這題卡在自然對數還有e的化簡)可以的話過程請寫詳細一點,萬分感謝~~ (4) y = xin (e-) In 已解決 回答數: 1