#### • Class 11 Physics Demo

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#### • how to find the inverse tangent

Question:

Answers:The additive inverse of a number x is a value y such that x + y = 0 (0 is the additive identity) The multiplicative inverse of a number x is a value y such that xy = 1 (1 is the multiplicative identity) Example: 1) Find the additive and multiplicative inverse of 7. 7 + y = 0 y = -7 So the additive inverse of -7. 2) Find the multiplicative inverse of 7. 7y = 1 y = 1/7 So the multiplicative inverse of 7 is 1/7. What you will learn: To find the additive inverse of any number, just take its negative and make its opposite sign. The additive inverse of 3 is -3. The additive inverse of -8 is 8. To find the multiplicative inverse of a number, just treat it as a fraction and then take its reciprocal.

Question:How do you find the additive inverse of these numbers? 246 - 37/53 -50.2 Here are some example, please use these to explane this problame to me, Thank You!

Answers:the additive inverse of one number is a number that sum up to 0 when added with the original number. for example, additive inverse of F is -F 246 --> -246 - 37/53 --> 37/53 -50.2 --> 50.2

Question:The question says to "graph each absolute- value function. Then graph the inverse on the same coordinate plane." I know how to graph, but how do you get the inverse?

Answers:To get the inverse of a function, first substitute x for y and y for x. Then solve for y. Example. Original: y=2x+5 New: x=2y+5, 2y=x+5, y=(x+5)/2 Example. Original: y=x^3 New: x=y^3, y=cube root(x)

Question:Can you help me identfity the additive and muliplicative inverse for the following numbers? -10 -0.125 4/3 How do you find the answer?

Answers:Additive inverses for numbers are nothing other than change the sign (make a + into a -, or a - into a +), you could also multiply by -1 to achieve the same goal. So the additive inverses for each are +10 +0.125 -4/3 The multiplicative inverse is the reciprocal, which means exchange numerator and denominator of an integer fraction. If it is not written as a integer fraction do so, or divide it by 1. So first rewriting your list as integer fractions -10/1 -0.125 = -1/8 4/3 (didn't change it was already an integer fraction) the multiplicative inverses are -1/10 -8/1 = -8 3/4 Notice for the multiplicative inverse you DO NOT change the sign.