solvefor c,cos^2(x)-4sin(x)+2cos(x)-3=0

解答

求解

c, cos^{2} (x) - 4 sin (x) + 2 cos (x) - 3 = 0

对所有 c 为真; cos^{2} (x) - 4 sin (x) + 2 cos (x) - 3 = 0

求解步骤

cos^{2} (x) - 4 sin (x) + 2 cos (x) - 3 = 0

两侧相等

对所有 c 为真; cos^{2} (x) - 4 sin (x) + 2 cos (x) - 3 = 0

so l v e f or f, (a + f) = a \cdot cosh (\frac{l}{( 2 a )})

so l v e f or t, tan (4 5^{\circ} + \frac{a}{2}) = sec (a) + tan (a)

so l v e f or c, (d^{2} + 1) (d^{2} + 4) = cos (t) + sin^{3} (t)

y = \frac{arcsin ( 1 )}{2}

so l v e f or k, x^{2} + y^{2} = k \cdot arctan (\frac{y}{x})