Question 1 Report
Find the minimum value of X2 - 3x + 2 for all real values of x
Answer Details
y = X2 - 3x + 2, dydx d y d x = 2x - 3 at turning pt, dydx d y d x = 0 ∴ 2x - 3 = 0 ∴ x = 32 3 2 d2ydx2 d 2 y d x 2 = ddx d d x (ddx d d x ) = 270 ∴ ymin = 232 3 2 - 332 3 2 + 2 = 94 9 4 - 92 9 2 + 2 = -14
Find the values of x and y respectively if ⎛⎜⎝10−1−122⎞⎟⎠ ( 1 0 − 1 − 1 2 2 ) + ⎛⎜⎝x1−10y−2⎞⎟⎠ ( x 1 − 1 0 y − 2 ) = ⎛⎜⎝−21−2−1−300⎞⎟⎠
A binary operation on the set of real numbers excluding -1 is such that sor all m, n ε ε R, m Δ Δ n = m + n + mn. Find the identity element of the operation.
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Find the angle subtended at the centre of a circle by a chord which is equal in length to the radius of the circle
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if X = {n2 + 1 : n = 0, 2, 3} and y = {n + 1 : n = 2, 3, 4, 5}, find x ∩ y
Evaluate 38÷12−1318×23+13
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