步骤1:解方程 **3x = 6x - 15** 移项得到: **3x - 6x = -15** **-3x = -15** 两边除以 **-3**: **x = (-15)/(-3) = 5** 步骤2:计算 **x + 8** 代入**x = 5**: **5 + 8 = 13** 逐项分析选项: - A. **5**(错误,直接取x值,未加8) - B....
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If 7p + 5q = 2 and 8p - 9q = 17, then what is -p + 14q? What is 11^2? What is y if 1/8 + y = 4/5? What is 5% of 400? What is 2+2? What is x and y if y = 3x - 4 and y = 6x - 8? If \int_C \vec F \cdot d \vec s = \int_C(-3x - 3y^2)...
(x 6 (2 x - 1) y 8 5 y) = ((2 x - 3) z 5 1 (w + 1) (4y + 1)) y = u(u - 1), u = x^2 + x. Given y = f(u) and u = g(x), find d y / d x = f'(g(x)) g' (x). If y = {3x^2 - 6} / {x - 1}, find dy/dx at x = 2. Find \df...
Camera improvements: iPhone 11 Pro users upgrading to the 15 Pro will gain access to a wide range of camera upgrades added over the years, including a 48-megapixel main lens, an upgraded front camera with autofocus, sensor-shift image stabilization, a 3x optical zoom option, Action mode, Ma...
设D(X)=4,D(y)=1,pXY=0.6,则D(3X-2y)=()。 A.40 B.34 C.17.6 D.25.6 点击查看答案&解析手机看题 单项选择题 在某温度时,已知0.1 mol·L-1氢氰酸(HCN)的电离度为0.01%。该温度时HCN的标准电离常数是()。 A.1.0×10-5 B.1.0×10-4 C.1.0×10-9 D.1.0×10-6 点击查看答案&解析手机看...
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If the integral is given in the form∫−aaf(x)dx, then: (a)∫−aaf(x)dx=2∫0af(x)dx,if,f(−x)=f(x),even function (b)∫−aaf(x)dx=0,if,f(−x)=−f(x),odd function. Also: sin−θ=−sinθcos−θ=cosθ ...
Find y' given y = \arcsin \sqrt{2 - x}. Find y' when y is given by y = 15/2 + sqrt(3x). Find y' when y is given by y = (9x)(-6x^3 + 3x). Find y' when y is given by y = 7x^6 - 5x^3 - 9. Find L 1 ( F ) , where F is given by: F ( s ) = 2...
Let f(x,y)= x^3y^3. Find \frac{\delta f}{\delta x} (2,-1) If A = \begin{bmatrix} 1 & 1 & 1\ 2 & 1 & -1\ 1 & 2 & 3 \end{bmatrix} and \left [c_{ij}\right] = Adj{A}, find c_{12}. Find \frac{...