(x > 0 || x [ 10 && y < 0) 与 (x ] 0 || (x < 10 && y < 0))等价
(x > 0 || x [ 10 && y < 0) 与 (x ] 0 || (x < 10 && y < 0))等价
2、设f(x)在区间[0,1]上连续,且g(x)在[0,2]上连续,则f(x)+g(x)在[0,2]上连续。
2、设f(x)在区间[0,1]上连续,且g(x)在[0,2]上连续,则f(x)+g(x)在[0,2]上连续。
已知函数f(x)是定义在[-e,0)∪(0,e]上的奇函数,当x∈[-e,0)时,f(x)=ax+ln(-x),则当x∈(0,e]时,f(x)=______.
已知函数f(x)是定义在[-e,0)∪(0,e]上的奇函数,当x∈[-e,0)时,f(x)=ax+ln(-x),则当x∈(0,e]时,f(x)=______.
设f(X)及g(X)在[a,b]上连续(a<b),证明:(1)若在[a,b]上f(x)>=0,且∫f(x)dx=0,则在[a,b]上f(x)恒等于0(2)若在[a,b]上f(x)>=g(x),且∫f(x)dx=∫g(x)dx,则在[a,b]上f(x)恒等于g(x)
设f(X)及g(X)在[a,b]上连续(a<b),证明:(1)若在[a,b]上f(x)>=0,且∫f(x)dx=0,则在[a,b]上f(x)恒等于0(2)若在[a,b]上f(x)>=g(x),且∫f(x)dx=∫g(x)dx,则在[a,b]上f(x)恒等于g(x)
lim(x->0)[1-x^2-e^(-x^2)]/[x(sinx)^3]
lim(x->0)[1-x^2-e^(-x^2)]/[x(sinx)^3]
x趋于0,[sin(x的平方)]/x
x趋于0,[sin(x的平方)]/x
f(x)=[1-√1-x]/x,x≠0处处可导,求a=b=f(x)=ax+b,x≧0
f(x)=[1-√1-x]/x,x≠0处处可导,求a=b=f(x)=ax+b,x≧0
11.6对于m = [[x, y] for x in range(0, 4) for y in range(0, 4)]中有多少个元素?
11.6对于m = [[x, y] for x in range(0, 4) for y in range(0, 4)]中有多少个元素?
设f(x)在[a,+∞)内二阶可导,f A: =A>0,f'(a)<0,f"(x)≤0(x>a),则
设f(x)在[a,+∞)内二阶可导,f A: =A>0,f'(a)<0,f"(x)≤0(x>a),则
设集合A={x|x2-1>0},B={x|log2x>0},则A∩B=[ ]A.{x|x>1}
设集合A={x|x2-1>0},B={x|log2x>0},则A∩B=[ ]A.{x|x>1}