看板 trans_math 關於我們 聯絡資訊
1. x x lim (tan -----)^(cos -----) - 2 2 x→π 我是試著令y=x/2去做,可是之後就解不出來了,囧rz(變成∞?) 2. __ csc (√2x ) ∫--------------- dx __ √x __ __ my answer is √2 (-ln |csc√2x + cot√2x|) +c 3. 2 1 1/2 -x ∫ ∫ e dxdy 0 y/2 my answer is -e^(-1/4) +1 4. R的範圍 (0,1) (1,2) (2,1) (1,0) ,計算 2 2 ∫ ∫ (x+y) sin (x-y) dA =? R my answer is (26/3)*((1/2)-(1/4)(sin 2)) 5. Find the interval of convergence of the power series ∞ (-1)^n (x-2)^n Σ ----------------- my answer is [1,3] n= 0 (n+1)^2 先謝謝各位~:) (每次上來請大家幫我看答案都好緊張喔Q_Q) -- ※ 發信站: 批踢踢實業坊(ptt.cc) ◆ From: 218.166.121.224