9. Find the equation of the plane through the three points A(-1,2,0), B(5,-1,3), and C(4,0,-2).
8. Evaluate .
7. Find the extrema, if any, of the function f defined by f(x,y) = x6 + y2 - 6x + 2y -1.
98.在滑塊驅動機構上使用齒條與小齒輪機構者稱為何種衝床?(A)摩擦衝床(B)齒條衝床(C)油壓衝床(D)連桿衝床
97.在滑塊驅動機構上使用螺旋機構者稱為何種衝床?(A)摩擦衝床(B)機械衝床(C)油壓衝床(D)連桿衝床
96.機械衝床與液壓衝床的差異,何者正確?(A)機械衝床比液壓衝床的行程長度長(B)機械衝床比液壓衝床在生產性上佔對優勢(C)機械衝床比液壓衝床不容易產生過負載(D)機械衝床比液壓衝床不容易保養
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