求這三題的過程 謝謝！

L000 In exercises 37-39, determine values of a and b that make the given function continuous. zeros at f(x) #C Some nu Theorer 2 sin x if x < 0 unction continu- X nction should be 37. f(x)= a if x=0 bcosx if x>0 52. For fo Does t

求解！！

3. 平面有一單位圓O如圖(1)所示,O為圓心,線段 PB 切圓於 B;已知∠POB=0,若 ∠ OPB 之角平分線交 OB於 4,則下列哪一個選項能表示線段 OA ? 2012 12/1/20 (1) (2) (3) (4) (5) 1-sin 0 cos A 1+ cos 0 sin e 1+ sin 0 1+ cos 0 P 3 B 圖(1)

求解……照著公式算了好久還是不知道自己在錯在哪裡😭不知道是哪裡算錯

In Exercises 1 and 2, use Newton's method to find the zero(s) of f to four decimal places by solving the equation f(x) = 0. Use the initial estimate(s) xo. 1. f(x) = 2x³ — 15x² + 36x - 20, x₁ = 1 YA 20+ 10+ - 1 -10 1 + 2 3 4 X

求解

Question 16 1 pts A-15 對於任意非零的實數a,試問X6 -d = 0有幾個實根? For any nonzero real number a, how many real roots does the equation x6 - a = 0 have?

求解1. b

B 3 Investigation 1 When a curve is increasing, we say that it has a positive gradient, and when it is decreasing we say that it has a negative gradient. Consider the curve y=xº shown in the diagram. 1 a Give the range of x values for which the gradient of the curve is i negative I ii positive iii equal to zero. b At which point is the gradient of the curve greater. A or B? The tangent to a curve at a point is the straight line that just touches but does not cross the curve at that point. N 1 y=p 1 2. 3 2 2 a On your GDC or other software, plot the curve y=x' and draw the tangent at the point (1, 1), as shown in the second diagram. b Zoom in to the point (1, 1). Factual What do you notice about the gradient of the tangent and the gradient of the curve at the point of contact? c Use your GDC or online software to draw tangents to y=x' at the points listed below and in each case write down the gradient of the tangent. 0 -1 1 2 X -1 0 2 2. 3 Gradient of tangent at x 2 d Conjecture a function for the gradient of y = x2 at the point on the curve with coordinates (x,x).

教我拜託 答案是8根號10/3

(類)已知 10 個人的數學成績,成绩的算術平均數為2 分,標準為10 分,但因甲生建省考場規則, 其成績 80 分須由10 個成績中剔除,求成績更改後,9個成績的算術平均數與標準差 620 6 # My = 62rto - do 38440 Jx-) Eyi - 6210 LISUS 9 1000 S 32420 blov sbou 39440 Jo k +72 X Jy = J syth - box? - Jazero-to-bord - Juo 39440 5 Jauo 2. 高二某班有 40 個學生,第二次期中考的數學平均為80分,標準差為4分,後因某生被檢舉作弊, 分 屬實,此考生原為80分改為0分,求現在全班新的標準差為「 Tr. Fu

請問這題怎麼算？🙇

有一形如隧道的牆面,上沿的4為以o為圓心,半 公尺的圓弧。已知 同 2與Go均垂直於 且=G2=1公四。老師要煙學生礁牆面唯布置一答形 。求此和矩形畫作面積的最大值。 4 | 用

為什麼不會等於2？

請問第11,12題要怎麼算？

二、進階題 Jl 如右圖, 正方形 42Cp 的邊長為 6, 分別以 4和 9 為圓心。6 為半徑畫弧, 兩弧交於 五點, 求鋪 色區域的面積. 7- 7 x6佃多 全 1

實在不會，求大家幫幫忙

生 2 AA 2位室汪汪 Af