What is expand (cos(2pivt)+cos(2piat))^2 ?

The solution to expand (cos(2pivt)+cos(2piat))^2 is cos^2(2pivt)+2cos(2pivt)cos(2piat)+cos^2(2piat)

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expand (cos(2pivt)+cos(2piat))^2

expand

(cos (2 π v t) + cos (2 πa t))^{2}

cos^{2} (2 π v t) + 2 cos (2 π v t) cos (2 πa t) + cos^{2} (2 πa t)

Solution steps

(cos (2 π v t) + cos (2 πa t))^{2}

Apply Perfect Square Formula:

(a + b)^{2} = a^{2} + 2 ab + b^{2}

a = cos (2 π v t), b = cos (2 πa t)

= cos^{2} (2 π v t) + 2 cos (2 π v t) cos (2 πa t) + cos^{2} (2 πa t)

\frac{4 ( x ^{2} - 3 )}{33 ( x ^{2} - 1 ) ^{\frac{4}{3}}}

n gu l a r (4, - \frac{π}{12})

\frac{7 e ^{2}}{( 7 + e ^{2} ) ^{2}}

(2 \cdot α) \cdot (A \cdot \frac{C}{2} + B \frac{C}{2})

\frac{( 9 x - 7 )}{( ( x + 3 ) ( x ^{(2)} - 1 ) )}

What is expand (cos(2pivt)+cos(2piat))^2 ?
The solution to expand (cos(2pivt)+cos(2piat))^2 is cos^2(2pivt)+2cos(2pivt)cos(2piat)+cos^2(2piat)