1.Please sketch the graph of 7x^2-6√3xy+13y^2-16=0
請問這題只能用線性代數解嗎??還是有其他方法可以畫出來呢??
2.Please analyze and graph the following
√x(x-5)^2
function f(x)=-------------
4
分析是要只要算出一微跟二微即可嗎??
畫圖的話就是描點出來連起來??還是有何速解法呢@@?
3.Please find the area of the region outside the cardioid
r=1+cosθ and inside the circle r=√3sinθ
請問這題答案是√3嗎??
4.Consider the polar equation r=4sin3θ
(b)Find the tangent lines at the pole
不懂到底該如何下手...
5.Locate the discontinuities of the function and illustrate by graphing.
y=ln(tan^2(x))
這題的圖範圍是要從-π/2 -> π/2 還是從 0 -> π呢??
畫這種三角函數的圖趨近於-∞還是∞要怎判斷啊??
以上這五題煩請指教~謝謝^^
--
※ 發信站: 批踢踢實業坊(ptt.cc)
◆ From: 220.134.245.25