x +4sin xThe horizontal asymptote equation of sine curve y=was calculated.5x -2cos x
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回答Known functions:Total derivative of z f(x,y)is dz 2xdx-2ydy,and f(1,1)=2,find the maximum and minimum value of f(x,y)in ... 查看全部
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回答We know that the function f(x)is continuous on [0,1]and differentiable in (0,1),andf(0)=0,f(1)=1.Proof:(①)There exists E... 查看全部
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回答Simplify the differential equation (1-x)y"-xy'+y 0 by substituting x cost(0
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回答As shown in the figure,the equation of curve C is y f(x),and point (3,2)is aninflection point of curve C.Lines l1 and l2... 查看全部
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回答As shown in the figure,C1 and C2 are the images of y=(1 +e*)and y=e*,respectively.The curve C3 of the crossing point (0,... 查看全部
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回答(x-t)f(t)drLetf(x)be continuous,andf(O)≠O,to calculate limx-0xf(x-1)de
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回答Set up regional D={(x,y)x2+y2≤4，x≥0，y≥0}，f(x)is a positivecontinuous function on D,and a and b are constants:to calculat... 查看全部
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回答Let a1,az and a3 be 3-dimensional column vectors,let's call them matrices,let's callthem matrices:A=(a1,a2,a3),B=(a1+a2+... 查看全部
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