Express the equation x^2 = 4y in polar coordinates. 相关知识点: 试题来源: 解析 Solution We use the formulas x=r cos θ and y=r sin θ \.x^2=4y Rectangular equation(r cos θ )^2=4(r sin θ ) Substitute x =rcos θ , y =rsin θ r^2 cos ^2 θ =4rsin θ Expandr=4( ...
Condense 4 log x - [3x log 2 - 4 log(x + 2)] Given that log 2 = x , log 3 = y , and log 7 = z write the following expressions in terms of x , y , and z . a) log 12 b) log 200 c) log 14 3 d) log 0.3 e) log 1.5 f) log 10.5 g) log...
Find∂z∂nand∂z∂vwherez=f(x,y)=xtan(xy)andx=uv,y=uv, express the answer in terms ofuandvonly. Partial derivatives: The function z is depending on the variables x and y, respectively. Therefore the variabl...
Express the interval in set-builder notation and graph the interval on a number line. (−9,7 ] Select the correct choice below and, if necessasry, fill in the answer box. A. The solution set in set-builder notation is {x| } (Type an inequality or a compound...