输入多项式[img=141x26]1803072ea65c221.png[/img]要得到输出结果[img=148x27]1803072eae42430.png[/img]应使用的语句是
A: Factor[3 x^3+7 x^2*y+4 x*y^2]
B: Collect[3 x^3+7 x^2y+4 xy^2]
C: FactorTerms[3x^3+7x^2*y+4x*y^2,x]
D: FactorTerms[3x^3+7x^2*y+4x*y^2,y]
A: Factor[3 x^3+7 x^2*y+4 x*y^2]
B: Collect[3 x^3+7 x^2y+4 xy^2]
C: FactorTerms[3x^3+7x^2*y+4x*y^2,x]
D: FactorTerms[3x^3+7x^2*y+4x*y^2,y]
举一反三
- 输入多项式[img=141x26]1803072dda8d028.png[/img]要得到输出结果[img=148x27]1803072de297764.png[/img]应使用的语句是 A: Factor[3 x^3+7 x^2*y+4 x*y^2] B: Collect[3 x^3+7 x^2y+4 xy^2] C: FactorTerms[3x^3+7x^2*y+4x*y^2,x] D: FactorTerms[3x^3+7x^2*y+4x*y^2,y]
- 应用Matlab软件计算行列式[img=110x88]17da5d7b00219d6.png[/img]为( ). A: x^2 - 6*x^2*y^2 + 8*x*y^3 - 3*y^4 B: x^3 - 6*x^2*y^2 + 8*x*y^3 - 3*y^4 C: x^4 - 6*x^2*y^2 + 8*x*y^3 - 3*y^4 D: x^5- 6*x^2*y^2 + 8*x*y^3 - 3*y^4
- 已知int x=3,y=4;，写出下列表达式的值 (1) (x,y) (2) x>y?x:y (3) x?y:x (4) (x>y)?(y>=2)?1:2:(y>x)?x:y
- 表示[img=134x43]17de85f031ab0c6.png[/img]的正确的C语句是（已定义double型变量x和y）？ A: y=3x^3-2x^2+1/x; B: y = 3 x*x*x - 2 x*x + 1/x; C: y = 3*x*x*x - 2*x*x + 1/x; D: y = 3*x*x*x - 2*x*x + 1.0/x;
- 方程${{x}^{2}}{{y}^{''}}-(x+2)(x{{y}^{'}}-y)={{x}^{4}}$的通解是( ) A: $y={{C}_{1}}x+{{C}_{2}}{{e}^{x}}-(\frac{1}{2}{{x}^{3}}+{{x}^{2}})$ B: $y={{C}_{1}}x+{{C}_{2}}{{e}^{x}}-(\frac{1}{2}{{x}^{3}}+{{x}^{4}})$ C: $y={{C}_{1}}x+{{C}_{2}}x{{e}^{x}}-(\frac{1}{2}{{x}^{3}}+{{x}^{4}})$ D: $y={{C}_{1}}x+{{C}_{2}}x{{e}^{x}}-(\frac{1}{2}{{x}^{3}}+{{x}^{2}})$