f(x)=2(x的3次方)—3x+1零点个数为多少个:

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f(x)=2(x的3次方)—3x+1零点个数为多少个:f(x)=2(x的3次方)—3x+1零点个数为多少个:f(x)=2(x的3次方)—3x+1零点个数为多少个:f(x)=2x³-2x

f(x)=2(x的3次方)—3x+1零点个数为多少个:
f(x)=2(x的3次方)—3x+1零点个数为多少个:

f(x)=2(x的3次方)—3x+1零点个数为多少个:
f(x)=2x³-2x²-x+1
=2x²(x-1)-(x-1)
=(2x²-1)(x-1)
=(√2x+1)(√2x-1)(x-1)
三个零点