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数学题目计算1/(a-b)+2a/(a2+b2)+(4a3)/(a4+b4)+1/a+b
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数学题目计算1/(a-b)+2a/(a2+b2)+(4a3)/(a4+b4)+1/a+b
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答案和解析
1/(a-b) + 1/(a+b) + 2a / (a2+b2) + 4a3次/(a4次+b4次)
=[(a+b)+(a-b)]/(a2-b2) + 2a / (a2+b2) + 4a3次/(a4次+b4次)
=2a/(a2-b2) + 2a / (a2+b2) + 4a3次/(a4次+b4次)
=2a[(a2+b2)+(a2-b2)]/(a4-b4)+ 4a3次/(a4次+b4次)
= 4a3次/(a4次-b4次)+4a3次/(a4次+b4次)
= 8a7次/(a8次-b8次)希望对你有帮助
=[(a+b)+(a-b)]/(a2-b2) + 2a / (a2+b2) + 4a3次/(a4次+b4次)
=2a/(a2-b2) + 2a / (a2+b2) + 4a3次/(a4次+b4次)
=2a[(a2+b2)+(a2-b2)]/(a4-b4)+ 4a3次/(a4次+b4次)
= 4a3次/(a4次-b4次)+4a3次/(a4次+b4次)
= 8a7次/(a8次-b8次)希望对你有帮助
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