Let f (x) be an odd function defined on R. if f (x) = log (1 + x) with base 3 when x ≥ 0, then f (- 2) is equal to?
Odd function: F (- x) = - f (x)
Then: F (- 2) = - f (2) = - log3 (1 + 2) = - 1
RELATED INFORMATIONS
- 1. How to find out the other x = log (1.15) 2 of x > 1.5
- 2. Given that a > 0 and a is not equal to 1, f (log a x) = [A / (a ^ 2 - 1)] / (x-1 / x) is 10 points Given that a > 0 and a is not equal to 1, f (log a x) = [A / (a ^ 2 - 1)] / (x-1 / x) 10 points Finding the expression of F (x) and judging the parity and monotonicity of F (x)
- 3. How much is log (1 / 2) √ 2?
- 4. Is the base 2 of log 4 equal to 1 / 2
- 5. What is 8 × 4 ^ (n-1) of log based on 2?
- 6. Log is based on 19 / 20, and the true number is 1 / 2. What is it
- 7. Logarithm of 7 / 48 with 2 as the radical + logarithm of 12 with 2 as the base minus logarithm of 42 with 2 as the base =(lg√7/48 +lg12 -1/2lg42)/lg2 =(lg√3+lg√7-1/2lg2-1/2lg3-1/2lg7)/lg2 =-0.5 How did step one get to step two?
- 8. Let a = log log log with 1 / 3 as base 2, B = log log with 2 as base 3, C = (1 / 2) ^ 0.3 Then the relationship of a, B and C is
- 9. Comparison size: the logarithm of 3 is 0.25 with 8 as the radical If yes, please state the process
- 10. If the real numbers x and y satisfy the following conditions: log logarithm of base 2 x + log logarithm of base 2 (x + y) = 1 + 2 log logarithm of base 2 y Then log is based on 2 (x △ y) =?
- 11. Logx + logx ^ 2 + log ^ 3 +. Logx ^ 10 = 110, find the value of X Help me
- 12. The relationship between log and LG? What is the base number of log without base number? For example: logx = 3, find x?
- 13. If cosa + 2sina = - √ 5, then Tana =? Why, cosa + 2sina = - √ 5 and sin ^ 2 + cos ^ 2 = 1, we get (√ 5sina + 2) ^ 2 = 0 And why are the final sin and COS values negative?
- 14. Tana = 1 / 4, simplify 2 (Sina) ^ 2-sin (pi-A) * sin (PI / 2-A) + [sin (3pi / 2 + a)] ^ 2 and evaluate
- 15. There are 320 red, white and black pieces. The ratio of the number of red and white pieces is 5:6, and the number of black pieces is 3 / 10 of that of white pieces No equation solution
- 16. Given the coordinates of ABC three points on quadratic function, find the analytic expression of this function A(1,0)B(2,-2)C(-2,-6)
- 17. It is known that, as shown in the figure, P is the interior point of the square ABCD, ∠ pad = ∠ PDA = 15 °. It is proved that △ PBC is an equilateral triangle
- 18. In the Geometer's Sketchpad, how to make a circle move on a straight line
- 19. It is known that the function f (x) is an even function defined on R. when x ≥ 0, f (x) = x2-4x. (1) find the value of F (- 1); (2) find the analytic expression of F (x); (3) find the minimum value of F (x) on [T, t + 1] (T > 0)
- 20. It is known that the joint probability density function of two-dimensional random variables (x, y) is f (x, y) = 2E ^ (- 2x-y), x > 0, Y > 0; f (x, y) = 0 (others) -------------------------------------------------------------------------------------------------- It is known that the joint probability density function of two-dimensional random variables (x, y) is F (x, y) = 2E ^ (- 2x-y), x > 0, Y > 0; f (x, y) = 0 (others) Find the probability of (x, y) falling in the region D: x > = 0, Y > = 0 and X + Y > = 1