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一道数学题,过程要,做出奖励100分graph y=2sin平方(X)-sin(2X) on your calculator. Find a single function in the form y=asin(b(X-h))+k that is approximate the same as y=2sin平方(X)-sin(2X)
题目详情
一道数学题,过程要,做出奖励100分
graph y=2sin平方(X)-sin(2X) on your calculator. Find a single function in the form y=asin(b(X-h))+k that is approximate the same as y=2sin平方(X)-sin(2X)
graph y=2sin平方(X)-sin(2X) on your calculator. Find a single function in the form y=asin(b(X-h))+k that is approximate the same as y=2sin平方(X)-sin(2X)
▼优质解答
答案和解析
y=2sin平方(x)-sin2x=cos2x-sin2x-1=-根2/2·sin(2x-π/2)-1=-根2/2·sin(2(x-π/4))-1
a=-根2/2
b=2
h=π/4
k=-1
a=-根2/2
b=2
h=π/4
k=-1
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