Solve the problem.A square wave is built up from sinusoidal curves of varying periods and amplitudes. Graph the following function, which can be used to approximate the square wave.f(x) = 
0 ? x ? 4 
A better approximation to the square wave is given by f(x) = 
style="vertical-align: -17.0px;" />0 ? x ? 4 
Graph this function and compare the result to the previous graph. Adding another term will improve the approximation even more. Write this new function with four terms.
What will be an ideal response?
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Mathematics
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Perform the indicated operations.
2
A. x2 - 6xy + 9y2 B. x2 - 6xy2 + 9y4 C. x2 + 9y4 D. x2 + 6xy2 + 9y4
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Determine the value of the indicated function in the given manner.Find sin 90° by using the functions of 45°.
A. 1 B. 0 C. - 1 D. undefined
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Write the decimal as a fraction in lowest terms.7.20
A. 
B. 
C. 
D. 
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Solve the equation. Express radicals in simplest form.(3x + 5)2 = 7
A. 
B. - 4 , 
C. 
D. 
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