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Log 9 (21)

Log 9 (21) is the logarithm of 21 to the base 9:

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Result:
Simply the Best Logarithm Calculator! Click To Tweet As you can see in our log calculator, log9 (21) = 1.3856218745807.

Calculate Log Base 9 of 21

To solve the equation log 9 (21) = x carry out the following steps.
  1. Apply the change of base rule:
    log a (x) = log b (x) / log b (a)
    With b = 10:
    log a (x) = log(x) / log(a)
  2. Substitute the variables:
    With x = 21, a = 9:
    log 9 (21) = log(21) / log(9)
  3. Evaluate the term:
    log(21) / log(9)
    = 1.39794000867204 / 1.92427928606188
    = 1.3856218745807
    = Logarithm of 21 with base 9
Here’s the logarithm of 9 to the base 21.

Additional Information

  • From the definition of logarithm b y = x ⇔ y = log b(x) follows that 9 1.3856218745807 = 21
  • 9 1.3856218745807 = 21 is the exponential form of log9 (21)
  • 9 is the logarithm base of log9 (21)
  • 21 is the argument of log9 (21)
  • 1.3856218745807 is the exponent or power of 9 1.3856218745807 = 21
BTW: Logarithmic equations have many uses in various contexts in science.

Frequently searched terms on our site include:

FAQs

What is the value of log9 21?

Log9 (21) = 1.3856218745807.

How do you find the value of log 921?

Carry out the change of base logarithm operation.

What does log 9 21 mean?

It means the logarithm of 21 with base 9.

How do you solve log base 9 21?

Apply the change of base rule, substitute the variables, and evaluate the term.

What is the log base 9 of 21?

The value is 1.3856218745807.

How do you write log 9 21 in exponential form?

In exponential form is 9 1.3856218745807 = 21.

What is log9 (21) equal to?

log base 9 of 21 = 1.3856218745807.

For further questions about the logarithm equation, common logarithms, the exponential function or the exponential equation fill in the form at the bottom.

Summary

In conclusion, log base 9 of 21 = 1.3856218745807.

You now know everything about the logarithm with base 9, argument 21 and exponent 1.3856218745807.
Further information, particularly about the binary logarithm, natural logarithm and decadic logarithm can be located in our article logarithm.

Besides the types of logarithms, there, we also shed a light on the terms on the properties of logarithms and the logarithm function, just to name a few.
Thanks for visiting Log9 (21).

Table

Our quick conversion table is easy to use:
log 9(x) Value
log 9(20.5)=1.3746546062242
log 9(20.51)=1.3748765616606
log 9(20.52)=1.3750984089053
log 9(20.53)=1.3753201480635
log 9(20.54)=1.3755417792407
log 9(20.55)=1.3757633025419
log 9(20.56)=1.3759847180721
log 9(20.57)=1.376206025936
log 9(20.58)=1.3764272262385
log 9(20.59)=1.3766483190839
log 9(20.6)=1.3768693045766
log 9(20.61)=1.3770901828208
log 9(20.62)=1.3773109539206
log 9(20.63)=1.3775316179799
log 9(20.64)=1.3777521751024
log 9(20.65)=1.3779726253916
log 9(20.66)=1.3781929689512
log 9(20.67)=1.3784132058842
log 9(20.68)=1.378633336294
log 9(20.69)=1.3788533602835
log 9(20.7)=1.3790732779554
log 9(20.71)=1.3792930894127
log 9(20.72)=1.3795127947576
log 9(20.73)=1.3797323940928
log 9(20.74)=1.3799518875204
log 9(20.75)=1.3801712751426
log 9(20.76)=1.3803905570612
log 9(20.77)=1.3806097333781
log 9(20.78)=1.380828804195
log 9(20.79)=1.3810477696134
log 9(20.8)=1.3812666297346
log 9(20.81)=1.3814853846599
log 9(20.82)=1.3817040344904
log 9(20.83)=1.3819225793269
log 9(20.84)=1.3821410192703
log 9(20.85)=1.3823593544212
log 9(20.86)=1.3825775848801
log 9(20.87)=1.3827957107473
log 9(20.88)=1.3830137321231
log 9(20.89)=1.3832316491076
log 9(20.9)=1.3834494618006
log 9(20.91)=1.3836671703019
log 9(20.92)=1.3838847747111
log 9(20.93)=1.3841022751279
log 9(20.94)=1.3843196716514
log 9(20.95)=1.3845369643809
log 9(20.96)=1.3847541534155
log 9(20.97)=1.384971238854
log 9(20.98)=1.3851882207953
log 9(20.99)=1.3854050993381
log 9(21)=1.3856218745807
log 9(21.01)=1.3858385466216
log 9(21.02)=1.386055115559
log 9(21.03)=1.3862715814909
log 9(21.04)=1.3864879445154
log 9(21.05)=1.3867042047301
log 9(21.06)=1.3869203622327
log 9(21.07)=1.3871364171209
log 9(21.08)=1.3873523694919
log 9(21.09)=1.3875682194429
log 9(21.1)=1.3877839670712
log 9(21.11)=1.3879996124736
log 9(21.12)=1.3882151557471
log 9(21.13)=1.3884305969882
log 9(21.14)=1.3886459362935
log 9(21.15)=1.3888611737594
log 9(21.16)=1.3890763094823
log 9(21.17)=1.3892913435583
log 9(21.18)=1.3895062760834
log 9(21.19)=1.3897211071533
log 9(21.2)=1.389935836864
log 9(21.21)=1.3901504653109
log 9(21.22)=1.3903649925896
log 9(21.23)=1.3905794187954
log 9(21.24)=1.3907937440234
log 9(21.25)=1.3910079683688
log 9(21.26)=1.3912220919264
log 9(21.27)=1.3914361147911
log 9(21.28)=1.3916500370574
log 9(21.29)=1.39186385882
log 9(21.3)=1.3920775801732
log 9(21.31)=1.3922912012113
log 9(21.32)=1.3925047220284
log 9(21.33)=1.3927181427186
log 9(21.34)=1.3929314633755
log 9(21.35)=1.3931446840931
log 9(21.36)=1.3933578049648
log 9(21.37)=1.3935708260843
log 9(21.38)=1.3937837475447
log 9(21.39)=1.3939965694393
log 9(21.4)=1.3942092918611
log 9(21.41)=1.3944219149032
log 9(21.42)=1.3946344386583
log 9(21.43)=1.3948468632192
log 9(21.44)=1.3950591886783
log 9(21.45)=1.395271415128
log 9(21.46)=1.3954835426608
log 9(21.47)=1.3956955713687
log 9(21.48)=1.3959075013438
log 9(21.49)=1.396119332678
log 9(21.5)=1.3963310654631

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