【填空题】函数y=3x的微分dy=____
举一反三
- 函数y=x^3在x=-1处,△x=0.02时增量△y=（）,微分dy=()
- 函数\(z = \ln \left( {3x + {y^4}} \right)\)的全微分为 A: \(dz = { { 3 + {y^4}} \over {3x + {y^4}}}dx + { { 3x + 4{y^3}} \over {3x + {y^4}}}dy\) B: \(dz = {3 \over {3x + {y^4}}}dx + { { 4{y^3}} \over {3x + {y^4}}}dy\) C: \(dz = {3 \over {3x + {y^4}}}dy + { { 4{y^3}} \over {3x + {y^4}}}dx\) D: \(dz = {3 \over {3x + {y^4}}}dx - { { 4{y^3}} \over {3x + {y^4}}}dy\)
- 设y=x^(x)(x>0)则函数y的微分dy=?
- 已知函数y=x²-1÷x其微分dy=?
- 求函数的导数dy/dx,和微分dy:y=x√1-x