英语翻译graph y=sinx-cosx on your calculator.Find a single function in the form y=asin(b(x-h))+k that is approximately the same as y=sinx-cosx.For extra coolness,find exact values,instead of approximate ones

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英语翻译graph y=sinx-cosx on your calculator.Find a single function in the form y=asin(b(x-h))+k that is approximately the same as y=sinx-cosx.For extra coolness,find exact values,instead of approximate ones
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英语翻译graph y=sinx-cosx on your calculator.Find a single function in the form y=asin(b(x-h))+k that is approximately the same as y=sinx-cosx.For extra coolness,find exact values,instead of approximate ones
英语翻译
graph y=sinx-cosx on your calculator.Find a single function in the form y=asin(b(x-h))+k that is approximately the same as y=sinx-cosx.For extra coolness,find exact values,instead of approximate ones

英语翻译graph y=sinx-cosx on your calculator.Find a single function in the form y=asin(b(x-h))+k that is approximately the same as y=sinx-cosx.For extra coolness,find exact values,instead of approximate ones
Find a single function in the form    y=asin(b(x-h))+k   that is approximately the same as    y=sinx-cosx
y=sinx-cosx=√2*(√2/2*sinx-√2/2*cosx)=√2*sin(x-pi/4)
转化成这种形式就可以 .图形如下

用matlab 啊