以下不能正确计算代数式值的C语言表达式是()
A: 1/3*sin(1/2)*sin(1/2)
B: sin(0.5)*sin(0.5)/3
C: pow(sin(0.5),2)/3
D: 1/3.0*pow(sin(1.0/2),2)
A: 1/3*sin(1/2)*sin(1/2)
B: sin(0.5)*sin(0.5)/3
C: pow(sin(0.5),2)/3
D: 1/3.0*pow(sin(1.0/2),2)
举一反三
- 以下表达式中,有两个的计算结果是相同的,请挑选出来 A: 1 / sqrt(sin(x) * sin(x) + cos(y) * cos(y)) B: sqrt(pow(sin(x), 2) + pow(cos(y), 2)) C: pow(sin(x) * sin(x) + cos(y) * cos(y), 0.5) D: pow(pow(sin(x), 2) + pow(cos(y), 2), 2)
- 已知sin(α+β)=2/1,sin(α-β)=3/1求证:sinαcosβ=5cosαsinβ
- 【计算题】已知sinα+cosα=1,求:(1)sinαcosα; (2)sin α-cos α; (3)sin α-cos α
- 计算[img=127x40]1803177bfc8c3e2.png[/img]的程序表达为 A: sqrt(sin alpha ^ 2 + cos beta ^ 2) B: sqrt(sin^2(alpha) + cos^2(beta)) C: sqrt(pow(sin(alpha), 2) + pow(cos(beta), 2)) D: sqrt pow(sin(alpha), 2) + pow(cos(beta), 2)
- \(\int { { {\sin }^{2}}x { { \cos }^{5}}xdx}\)=( ) A: \(\frac{1}{3} { { \sin }^{3}}x-\frac{2}{5} { { \sin }^{5}}x+\frac{1}{7} { { \sin }^{7}}x+C\) B: \(\frac{2}{3} { { \sin }^{3}}x-\frac{1}{5} { { \sin }^{5}}x-\frac{1}{7} { { \sin }^{7}}x+C\) C: \(\frac{1}{3} { { \cos }^{3}}x-\frac{2}{5} { { \cos }^{5}}x+\frac{1}{7} { { \cos }^{7}}x+C\) D: \(\frac{2}{3} { { \cos }^{3}}x-\frac{1}{5} { { \cos }^{5}}x-\frac{1}{7} { { \cos }^{7}}x+C\)