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ofer coroana.........​

Ofer Coroana class=

Răspuns :

Răspuns:

1 = cos^2 (x) + sin^2 (x) = (e^ix + e^-ix )^2 /4 + sin^2 (x) = (e^2ix + e^-2ix )/4 + e^2ln(sin(x)) + 1/2

int_{0} ^ {π/2} {x * prod_{j = 1} ^ {∞} {cos(x / 2^j )}} dx

1 = cos^2 (x) + sin^2 (x) = (e^ix + e^-ix )^2 /4 + sin^2 (x) = (e^2ix + e^-2ix )/4 + e^2ln(sin(x)) + 1/2

a=42

b=7

Explicație pas cu pas:

int_{0} ^ {π/2} {x * prod_{j = 1} ^ {∞} {cos(x / 2^j )}} dx

1 = cos^2 (x) + sin^2 (x) = (e^ix + e^-ix )^2 /4 + sin^2 (x) = (e^2ix + e^-2ix )/4 + e^2ln(sin(x)) + 1/2