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If f(x) =cos[pi] x+cos[pi x], then find f(pi/2),where [.] denotes the greatest integer.

If f(x) =cos[pi] x+cos[pi x], then find f(pi/2),where [.] denotes the greatest integer.

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Grade:12

1 Answers

Vidu
26 Points
6 years ago
f(x)=cos[pi]x+cos[pix]f(pi/2)=cos[pi]pi/2+cos[pi*pi/2]Since pi=3.14 its integral part is 3So,cos3pi/2+cos[4.something]0+cos4Ans. Cos 4

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