Assuming you mean 31/4
31/4 = 13/4 → multiplicative inverse is to multiply by 4/13
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If you mean 1 3/4, convert this into an improper fraction - one that has only numerator and denominator. Then exchange numerator and denominator to get the multiplicative inverse.
A multiplicative inverse is the same as a reciprocal. The multiplicative inverse of x is 1/x. So, the multiplicative inverse of 4 is 1/4; or 7 is 1/7 and of 0.2 is 1/0.2 = 5.
The multiplicative inverse of a complex number is found by taking the reciprocal of the number. In this case, the reciprocal of 4i is -1/4i. To find the reciprocal, you divide 1 by the complex number, which results in -1/4i. This is the multiplicative inverse of 4i.
a multiplicative inverse is the same as a reciprocal so basically just flip it over:3/4 would be 4/3
-4 multiplicative inverse of -0.25 is 1/-0.25 which is -4
It is 4 over 3.